WO2018216778A1 - Camera actuator, camera module, and camera mounted device - Google Patents

Abstract

This camera actuator comprises: an optical path bending member; a lens unit disposed at a subsequent stage of the optical path bending member; a first actuator that is disposed near the optical path bending member and displaces the optical path bending member; and a second actuator and a third actuator that are disposed near the lens unit so as to be apart from each other in a first direction, and that respectively displace the lens unit in a second direction and a third direction that are orthogonal to the first direction and orthogonal to each other. As a result, the present invention provides a camera actuator capable of improving the degree of freedom of design around the optical path bending member.

Description

Camera actuator, camera module, and camera mounting device

The present invention relates to a camera actuator, a camera module, and a camera mounting device.

Conventionally, thin camera-equipped devices equipped with camera modules such as smartphones and digital cameras are known. The camera module includes a lens unit having one or more lenses and an image sensor that captures a subject image formed by the lens unit.

Also, a bending optical system in which light from a subject along the first optical axis is bent in the direction of the second optical axis and guided to the subsequent lens unit by a prism that is an optical path bending member provided in the front stage of the lens unit There has also been proposed a camera module including the above (for example, Patent Document 1).

The camera module disclosed in Patent Document 1 includes a shake correction device that corrects camera shake generated in the camera, and an autofocus device that performs autofocus. Such a camera module has a shake correction actuator and an autofocus actuator as camera actuators. Of these, the shake correction actuator includes a first actuator and a second actuator that swing the prism about two different axes. When camera shake occurs, the shake correction actuator swings the prism under the control of the control unit. As a result, camera shake generated in the camera is corrected.

JP2015-92285A

By the way, in the case of the camera actuator disclosed in Patent Document 1 as described above, since the first actuator and the second actuator of the shake correction actuator are arranged around the prism, the design around the prism is designed. There is a possibility that the degree of freedom becomes low.

An object of the present invention is to provide a camera actuator, a camera module, and a camera mounting device that can improve the degree of design freedom around the optical path bending member.

One aspect of the camera actuator according to the present invention is an optical path bending member, a lens portion disposed at a subsequent stage of the optical path bending member, and a first unit disposed near the optical path bending member to displace the optical path bending member. A second actuator is disposed in the vicinity of the lens portion in the first direction so as to be spaced apart from each other, and the lens portion is displaced in each of the second direction and the third direction orthogonal to the first direction and orthogonal to each other. An actuator and a third actuator.

One aspect of the camera module according to the present invention includes the above-described camera actuator and an image sensor disposed at the rear stage of the lens unit.

One aspect of the camera mounting device according to the present invention includes the above-described camera module and a control unit that controls the camera module.

According to the present invention, it is possible to provide a camera actuator, a camera module, and a camera mounting device that can improve the degree of design freedom around the optical path bending member.

1 is a perspective view of a camera module according to Embodiment 1. FIG. FIG. 1B is a perspective view of the camera module viewed from a different angle from FIG. 1A. It is a perspective view of a camera module in a state where a case is omitted. It is the perspective view of the camera module seen from the angle different from FIG. 2 in the state which abbreviate | omitted the case. It is AA sectional drawing of FIG. 1A. It is BB sectional drawing of FIG. 1A. It is CC sectional drawing of FIG. 1A. It is a perspective view of the 1st base. It is a perspective view of the state where the holder was assembled to the first base. 9A is a perspective view of the prism module in a state where the first cover is omitted, and FIG. 9B is an E-section of FIG. 9A for explaining a state in which the pressing portion of the holding spring presses the pressed portion of the holder. It is sectional drawing equivalent to E cross section. It is a perspective view which takes out and shows only a restraining spring. FIG. 2 is a cross-sectional view of the lens module when cut along the line DD in FIG. 1A. It is a perspective view of a lens module in the state where the second cover was omitted. FIG. 13 is a perspective view of the lens module in a state in which a second cover is omitted from a different angle from FIG. 12. It is a perspective view of the 2nd base. It is the perspective view of the 2nd base seen from the angle different from FIG. It is a perspective view of a lens guide. It is a perspective view which takes out and shows a spring with the arrangement | positioning of an assembly | attachment state. It is a perspective view which takes out and shows only FPC of a lens module. It is a perspective view which takes out and shows only a reference member. 6 is a perspective view of a camera module according to Embodiment 2. FIG. It is sectional drawing of the prism module part of a camera module. It is a figure which shows an example of the camera mounting apparatus which mounts a camera module. FIG. 6 is a cross-sectional view of the prism module of the camera module according to Embodiment 3 taken along line CC in FIG. 1A. It is the E section enlarged view of FIG. 1B is a cross-sectional view of the prism module taken along line AA in FIG. 1A. FIG. It is a perspective view in the state where some members were assembled to the first base. FIG. 27 is a perspective view of a state in which a swing support spring is assembled to the first base in the state shown in FIG. 26. It is a perspective view of a prism module in a state where a first cover and a prism are omitted. It is a perspective view of a prism module in a state where a first cover is omitted. It is a perspective view which takes out and shows a rocking | fluctuation support spring with arrangement | positioning of an assembly | attachment state. It is the partial side view seen from the right side of FIG. It is a perspective view of a holder. It is a perspective view which takes out and shows the 2nd actuator and AF actuator of a camera module concerning Embodiment 4. It is a perspective view which shows the lens module of the camera module which concerns on Embodiment 5 in the state which omitted some members. It is a perspective view which takes out and shows a 2nd actuator, AF actuator, a reinforcement plate, and FPC. It is a perspective view which takes out and shows a 2nd actuator, AF actuator, and a reinforcement plate. It is a perspective view which takes out and shows the 2nd actuator and AF actuator of a camera module concerning Embodiment 6. It is a perspective view which shows the lens module of the camera module which concerns on Embodiment 7 in the state which abbreviate | omitted some members. It is a perspective view which takes out and shows a 2nd actuator and AF actuator. It is a perspective view which shows the prism module of the camera module which concerns on Embodiment 8 of this invention in the state which abbreviate | omitted some members. It is a perspective view which shows the prism module which abbreviate | omitted one part member in the state seen from the angle different from FIG. It is a perspective view of the state where the holder was assembled to the first base. It is a perspective view of the 1st base. It is a top view of the 1st base. It is a perspective view which takes out and shows only a restraining spring. It is a perspective view of a lens module which omitted some members. It is a perspective view which shows the lens module which abbreviate | omitted one part member in the state seen from the angle different from FIG. It is a side view of the lens module which abbreviate | omitted the 2nd base. It is a side view which shows the lens module which abbreviate | omitted the 2nd base in the state seen from the opposite side to FIG. It is a perspective view which takes out and shows only FPC of a lens module. It is a perspective view which takes out and shows a spring with the arrangement | positioning of an assembly | attachment state. 52A is a schematic diagram showing a gel locking part of a spring according to Embodiment 8, and FIG. 52B is a schematic diagram showing Modification 1 of the gel locking part, and FIG. 52C is a gel locking part. It is a schematic diagram which shows the modification 2 of a part.

Hereinafter, some examples of embodiments according to the present invention will be described in detail with reference to the drawings. It should be noted that the following embodiments can be combined as appropriate as long as there is no technical contradiction.

[1. Embodiment 1]
1A and 1B are perspective views of a camera module 1 according to Embodiment 1 of the present invention. 2 and 3 are perspective views of the camera module 1 with the case removed. 4 is a cross-sectional view taken along the line AA in FIG. 1A, and FIG. 5 is a cross-sectional view taken along the line BB in FIG. 1A. Hereinafter, after describing the outline of the camera module 1, specific structures of the prism module 2, the lens module 3, and the imaging element module 4 included in the camera module 1 will be described.

[1.1 Camera module]
The camera module 1 is mounted on a thin camera mounting device such as a smartphone (see FIG. 22), a mobile phone, a digital camera, a notebook computer, a tablet terminal, a portable game machine, an in-vehicle camera, and the like.

Hereinafter, each part constituting the camera module 1 of the present embodiment will be described with reference to a state in which the camera module 1 is incorporated. In describing the structure of the camera module 1 of the present embodiment, an orthogonal coordinate system (X, Y, Z) is used. In the drawings to be described later, a common orthogonal coordinate system (X, Y, Z) is also used.

The camera module 1 is mounted so that the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-rear direction, for example, when shooting is actually performed by the camera mounting device. The light from the subject enters the prism 23 of the prism module 2 from the Z direction + side (plus side) as indicated by a broken line α (also referred to as a first optical axis) in FIG. The light incident on the prism 23 is bent at the optical path bending surface 231 of the prism 23 as shown by a broken line β (also referred to as a second optical axis) in FIG. The light is guided to the lens portion 33 of the lens module 3 arranged on the side). Then, the subject image formed by the lens unit 33 (see FIG. 4) is imaged by the imaging element module 4 disposed at the subsequent stage of the lens module 3.

The camera module 1 described above is shake-corrected by the first shake correction device 24 (see FIG. 4) incorporated in the prism module 2 and the second shake correction device 37 (see FIG. 5) incorporated in the lens module 3. (OIS: Optical Image Stabilization). Further, the camera module 1 described above performs autofocus by displacing the lens unit 33 in the X direction by the AF device 36 incorporated in the lens module 3.

[1.1.1 Camera actuator]
The camera module 1 described above has a camera actuator that drives the first shake correction device 24, the second shake correction device 37, and the AF device 36. Such a camera actuator includes a first actuator 244 that drives the first shake correction device 24, a pair of second actuators 370a and 370b that drives the second shake correction device 37, and a pair of AF that drives the AF device 36. Actuators 364a and 364b are provided.

In the case of the present embodiment, the arrangement of the first actuator 244 is devised to improve the degree of freedom of design around the prism 23 that is an optical path bending member, and the second actuators 370a and 370b and the AF actuator in the lens module 3 are devised. The arrangement mode of 364a and 364b is devised. The arrangement mode of each actuator will become clear from the description of the prism module 2 and the lens module 3 described later.

Hereinafter, the prism module 2, the lens module 3, and the image sensor module 4 included in the camera module 1 of the present embodiment will be described with reference to FIGS. 1A to 19.

[1.1.2 Prism module]
As shown in FIG. 4, the prism module 2 includes a first cover 21, a first base 22, a prism 23, and a first shake correction device 24.

[First cover]
As shown in FIGS. 4 and 5, the first cover 21 is made of, for example, a synthetic resin or a nonmagnetic metal, and is a box-shaped member that is open on both sides in the Z direction and on the X direction + side. Light from the subject side can enter the internal space of the first cover 21 through the opening in the Z direction + side of the first cover 21. The first cover 21 as described above is combined with the first base 22 described later from the Z direction + side.

[First base]
The first base 22 supports a holder 241 (see FIGS. 4 and 8) of a first shake correction device 24, which will be described later, so as to be able to swing around a first axis parallel to the Y direction. For this purpose, the first base 22 has a first bearing portion 225a and a second bearing portion 225b (see FIG. 7) which are bearing portions.

In the case of the present embodiment, the first base 22 is a box-shaped member that is open on the Z direction + side and the X direction + side. Note that a base first opening 220 (see FIG. 4) is formed in a wall portion on the Z direction − side of the first base 22 (that is, the bottom wall portion 229). In FIG. 7, a first coil 244 c and a first Hall element 244 e of the first actuator 244 described later are disposed in the base first opening 220. The first base 22 is combined with the first cover 21 to form a first accommodation space 223 (see FIG. 4) in which the first shake correction device 24 and the prism 23 can be arranged.

Further, the first base 22 has first side wall portions 224a and 224b (see FIG. 7) opposed to the Y direction at both ends in the Y direction. A first bearing portion 225a is provided on the first side wall portion 224a on the Y direction + side. On the other hand, a second bearing portion 225b is provided on the first side wall portion 224b on the Y direction minus side.

The first bearing portion 225a and the second bearing portion 225b have shapes symmetrical to each other in the Y direction. Hereinafter, the structure of the first bearing portion 225a will be described. The first bearing portion 225a has a substantially V-shaped notch shape that opens in the Z direction + side when viewed in the Y direction. Both side surfaces in the X direction of the first bearing portion 225a are curved.

In addition, a first positioning convex portion 226, a second positioning convex portion 227, and a third positioning convex portion 228 (see FIG. 7) are formed on the end surfaces on the Z direction + side of the first side wall portions 224a and 224b, respectively. Yes. The first positioning convex portion 226 and the second positioning convex portion 227 engage with a pair of holding springs 242 (see FIG. 10) described later, and prevent the pair of holding springs 242 from shifting in the Y direction. On the other hand, the third positioning protrusion 228 engages with the pair of holding springs 242 to position the pair of holding springs 242 when assembled.

Note that the structure of the bearing is not limited to the illustrated case. The bearing portion may be a bearing such as a rolling bearing or a sliding bearing, for example.

[prism]
The prism 23 has a triangular prism shape, and is disposed in the first accommodation space 223 while being held by a holder 241 (see FIGS. 4 and 8) of the first shake correction device 24 described later.

Such a prism 23 bends incident light from the subject side (that is, the Z direction + side) at the optical path bending surface 231 (see FIG. 4), and the direction of the lens unit 33 described later (that is, the X direction + side). To guide the light.

The optical path bending surface 231 is a surface parallel to the Y direction, and a predetermined angle (45 ° in the present embodiment) with respect to the first optical axis (that is, the Z direction) so that the above-described light guide is possible. Just tilted. The structure of the prism 23 may be different from that of the present embodiment as long as incident light from the subject side can be guided to the lens unit 33.

[First shake correction device]
The first shake correction device 24 swings the prism 23 around a first axis parallel to the Y direction, and performs shake correction in the rotational direction around the first axis. Such a first shake correction device 24 is arranged in the first accommodation space 223 (see FIG. 4).

The first shake correction device 24 (see FIGS. 2 and 4) includes a holder 241, a pair of holding springs 242, and a first actuator 244.

In such a first shake correction device 24, the holder 241 is supported by the first base 22 so as to be swingable. In this state, the holder 241 can swing around the first axis based on the driving force of the first actuator 244. When the first actuator 244 is driven under the control of a control unit (not shown), the holder 241 and the prism 23 swing around the first axis. Thereby, the shake in the rotational direction around the first axis is corrected. Hereinafter, specific structures of the holder 241, the holding spring 242, and the first actuator 244 will be described.

[holder]
The holder 241 (see FIGS. 6 and 8) is made of, for example, a synthetic resin and holds the prism 23 in a swingable manner with respect to the first base 22.

The holder 241 has a mounting surface 241a (see FIGS. 6 and 8) that faces the optical path bending surface 231 of the prism 23 from the back side (Z direction-side). The mounting surface 241a has, for example, a surface parallel to the optical path bending surface 231. The mounting surface 241a is not limited to the structure of the present embodiment, and may be a boss having a shape that enables positioning of the prism 23, for example.

The holder 241 has a pair of swing support portions 241c and 241d (see FIGS. 6 and 8) provided coaxially with each other. The center axis of the swing support portions 241c and 241d is the swing center axis (that is, the first axis) of the holder 241.

The swing support portions 241c and 241d are respectively provided on a pair of opposing wall portions 241f and 241g (see FIGS. 6 and 8) that sandwich the mounting surface 241a from both sides in the Y direction. Specifically, the swing support portion 241c is provided on the Y direction + side surface of the opposing wall portion 241f. Such a swinging support portion 241 c is engaged with the first bearing portion 225 a of the first base 22.

On the other hand, the swing support portion 241d is provided on the Y direction-side surface of the opposing wall portion 241g. Such a swinging support portion 241 d is engaged with the second bearing portion 225 b of the first base 22.

The holder 241 has pressed parts 241i and 241k (see FIGS. 2, 3 and 8). Each of the pressed parts 241i and 241k is pressed in the Z direction-side (that is, toward the first base 22) by a pair of holding springs 242 described later. Thereby, the holder 241 is positioned in the Z direction.

In the case of this embodiment, the pressed portion 241i (see FIGS. 2 and 8) on the Y direction + side is two convex portions formed on the Y direction + side surface of the opposing wall portion 241f. Specifically, the pressed portion 241i is provided on both sides in the X direction of the swing support portion 241c on the Y direction + side surface of the opposing wall portion 241f.

On the other hand, the pressed portion 241k (see FIG. 3) on the Y direction-side is two convex portions formed on the Y direction-side surface of the opposing wall portion 241g. Specifically, the pressed portion 241k is provided on both sides in the X direction of the swing support portion 241d on the Y direction-side surface of the opposing wall portion 241g.

Each of the pressed parts 241i and 241k as described above has a spherical outer peripheral surface. Specifically, each of the pressed parts 241i and 241k has a circular shape in which a cross-sectional shape cut along a plane parallel to the ZX plane has a diameter that decreases as the distance from the opposing wall parts 241f and 241g increases. For this reason, the contact between the outer peripheral surfaces of the pressed parts 241i and 241k and the pair of holding springs 242 is a point contact.

Further, by making the outer peripheral surfaces of the pressed parts 241i and 241k into a spherical shape, the force of the pair of holding springs 242 pressing the pressed parts 241i and 241k includes a component in the center of the holder 241 in the Y direction. . With such a configuration, the holder 241 is positioned in the Y direction and reduced in backlash.

Furthermore, the holder 241 returns to the initial position based on the elastic force of the pair of holding springs 242 when the energization of the first actuator 244 described later is cut off. The initial position of the holder 241 means a state where the holder 241 is not swung by the first actuator 244.

[Retaining spring]
Each of the pair of holding springs 242 (see FIGS. 9A, 9B, and 10) is an urging mechanism, and is fixed to the first base 22. Each of the holding springs 242 presses the holder 241 in the Z direction-side (that is, the direction toward the first base 22). At the same time, the holding springs 242 press the holders 241 from both sides in the Y direction toward the center in the Y direction.

Specifically, each of the holding springs 242 is fixed to a part of the pair of first side wall portions 224a and 224b (specifically, end surfaces on the Z direction + side) by a fixing means such as an adhesive. ing. The fixing means may be, for example, a fixing means using a fastening part (for example, a set of rivets, bolts, bolts and nuts).

Each of the pair of holding springs 242 as described above is a metal leaf spring, as shown in FIG. 10, and has a fixed base portion 242a and a pair of pressing portions 242c.

The fixed base 242a is a portion fixed to the first base 22. In such a fixed base 242a, a spring-side first hole 242e, a spring-side second hole 242g, and a spring-side third hole 242i are formed.

The first positioning projection 226 and the second positioning projection 227 of the first base 22 are inserted through the spring-side first hole 242e and the spring-side second hole 242g (see FIGS. 2 and 3). With this configuration, the displacement of the holding spring 242 in the Y direction due to the reaction force from the holder 241 is prevented.

The third positioning projection 228 of the first base 22 is inserted through the spring-side third hole 242i (see FIGS. 2 and 3). With this configuration, positioning when the holding spring 242 is assembled to the first base 22 is achieved.

Each of the pair of pressing parts 242c extends in a direction approaching the holder 241 from two places of the fixed base part 242a. Each of the pair of pressing portions 242c presses the pressed portion 241i of the holder 241 in the Z direction-side. Accordingly, the swing support portion 241 c of the holder 241 is pressed against the first bearing portion 225 a of the first base 22. Each of the pair of pressing portions 242c presses the pressed portion 241i of the holder 241 toward the center of the holder 241 in the Y direction.

[First actuator]
The first actuator 244 (see FIGS. 4 and 6) swings the holder 241 about the first axis. In the case of the present embodiment, the first actuator 244 is disposed on the back side of the prism 23 and the holder 241 (that is, Z direction) so as to overlap the optical path bending surface 231 and the holder 241 of the prism 23 in the Z direction (that is, the direction of the first optical axis). (Direction-side). In the present embodiment, the direction of the first optical axis corresponds to the first direction.

Specifically, the first actuator 244 includes a first magnet 244a, a first coil 244c, and a first Hall element 244e. Such a first actuator 244 is a so-called moving magnet type in which a first magnet 244a is fixed to a holder 241 which is a movable member and a first coil 244c is fixed to a first base 22 which is a fixed member. Actuator.

The first actuator 244 may be a so-called moving coil type actuator in which the first coil 244c is fixed to the holder 241 and the first magnet 244a is fixed to the first base 22. Since the structure of each part constituting the first actuator 244 is almost the same as a conventionally known structure, detailed description thereof is omitted. Hereinafter, the arrangement of each part constituting the first actuator 244 will be described.

The first magnet 244a is fixed to the back side surface of the holder 241 (that is, the surface on the Z direction side). In the present embodiment, the first magnet 244a has a magnetization direction in the Z direction and has two magnetic poles on one side. The first coil 244c and the first Hall element 244e are fixed to the surface of the flexible printed circuit board (hereinafter referred to as FPC) 25 (that is, the surface on the Z direction + side) fixed to the back side surface of the first base 22. Yes.

The first coil 244c and the first hall element 244e are disposed in the base first opening 220 (see FIGS. 4 and 6) of the first base 22. In the case of the present embodiment, the first coil 244c is a so-called air-core coil having an oval shape. The first hall element 244e is disposed inside the first coil 244c in the radial direction.

In the case of the first actuator 244 having the above-described configuration, when a current flows through the first coil 244c via the FPC 25 under the control of a camera shake correction control unit (not shown), the first magnet 244a is moved in the X direction. A Lorentz force is generated that displaces the lens. Since the first magnet 244a is fixed to the holder 241, a moment about the first axis acts on the holder 241 based on the Lorentz force. As a result, the holder 241 swings around the first axis. By controlling the direction of the current flowing through the first coil 244c, the displacement direction of the holder 241 is switched.

[1.1.3 Lens module]
The lens module 3 includes a second cover 31, a second base 32, a lens unit 33, an AF device 36, a second shake correction device 37, and a reference member 38, as shown in FIGS.

[Second cover]
The second cover 31 is made of, for example, a synthetic resin or a nonmagnetic metal, and is a box-shaped member that is open on both sides in the X direction and on the Z direction-side (that is, the back side). The second cover 31 as described above is combined with the second base 32 to be described later from the Z direction + side.

[Second base]
The second base 32 (see FIGS. 14 and 15) is combined with the above-described second cover 31, whereby the second accommodation space 320 (in which the lens unit 33, the AF device 36, and the second shake correction device 37 can be disposed). 11).

The second base 32 has a bottom surface portion 321 and a pair of second side wall portions 322a and 322b. The bottom surface portion 321 includes a base portion made of synthetic resin and a metal reinforcing plate 323 insert-molded on the base portion. Such a reinforcing plate 323 contributes to increase in rigidity and thickness of the bottom surface portion 321.

The reinforcing plate 323 of the second base 32 is disposed so as to overlap the lens guide 361 on the Z direction-side with respect to a lens guide 361 described later. Specifically, a range in which the lens guide 361 can move during autofocus operation (ie, a range that can move in the X direction) and a range that can move during shake correction operation (ie, move in the Y direction). The lens guide 361 is present on the Z direction + side of the reinforcing plate 323 regardless of the position in any possible range. For this reason, the surface of the reinforcing plate 323 (that is, the surface on the + Z direction side) is always covered with the lens guide 361 and is not exposed. Thereby, the reflected light from the reinforcing plate 323 is prevented from entering the lens unit 33 and eventually the image sensor of the image sensor module 4 described later.

Bottom face through- holes 321a and 321b (see FIG. 15) are formed on both sides in the Y direction of the reinforcing plate 323 in the bottom face portion 321. AF coils 366a and 366b of a pair of AF actuators 364a and 364b, which will be described later, are disposed in the bottom surface through holes 321a and 321b (see FIGS. 5 and 11).

Each of the second side wall portions 322a and 322b extends from the Y direction both ends of the bottom surface portion 321 to the Z direction + side. The second side wall portions 322a and 322b have coil placement portions 322d and 322e, respectively. Second coils 372a and 372b of a second shake correction device 37, which will be described later, are placed on the coil placement portions 322d and 322e, respectively (see FIGS. 5 and 11).

In addition, a pair of magnet spaces 322g and 322h (see FIG. 11) are formed between the pair of coil placement portions 322d and 322e and the bottom surface portion 321. In the magnet spaces 322g and 322h, AF magnets 365a and 365b of a pair of AF actuators 364a and 364b described later are disposed, respectively.

In the case of the present embodiment, the bottom through- holes 321a and 321b and the coil mounting portions 322d and 322e overlap with each other at a predetermined interval in the Z direction. Therefore, the AF coils 366a and 366b disposed in the bottom surface through- holes 321a and 321b and the second coils 372a and 372b mounted on the coil mounting portions 322d and 322e have a predetermined interval in the Z direction. Open and overlap.

Further, the second side wall portion 322a has spring placement portions 324a and 324c (see FIG. 2) for placing springs 362a and 362c, which will be described later, at both ends in the X direction on the side surface on the Y direction + side. On the other hand, the second side wall portion 322b has spring arrangement portions 324b and 324d (see FIG. 3) for arranging springs 362b and 362d described later on both ends in the X direction on the side surface on the Y direction minus side. Note that gel-like damping members covering the springs 362a to 362d may be arranged in the spring arrangement portions 324a to 324d, respectively.

[Lens part]
The lens unit 33 is disposed in the second accommodation space 320 while being held by a lens guide 361 described later. Such a lens part 33 has a cylindrical lens barrel and one or more lenses held in the lens barrel. As an example, the lens unit 33 includes a telephoto lens group having, for example, an optical triplex or more, which is fixed between the X-direction end of the lens barrel and the X-direction end of the lens barrel. In addition, the structure of the lens part 33 is not limited to the above-mentioned structure.

[AF device]
The AF device 36 (see FIG. 5) displaces the lens unit 33 in the X direction for the purpose of autofocus. Specifically, the AF device 36 includes a lens guide 361, a plurality of (four in this embodiment) springs 362a to 362d, an FPC 363, and a pair of AF actuators 364a and 364b.

[Lens guide]
The lens guide 361 (see FIGS. 11 and 16) has a housing space capable of holding the lens barrel. Such a lens guide 361 is disposed in the above-described second accommodation space 320 in a state where displacement in the X direction (that is, the direction of the second optical axis) and the Y direction is possible.

The lens guide 361 has a pair of first magnet holding portions 361a and 361b (see FIG. 11) for holding AF magnets 365a and 365b of a pair of AF actuators 364a and 364b described later. In the case of the present embodiment, the pair of first magnet holding portions 361a and 361b are disposed in the magnet spaces 322g and 322h of the second base 32, respectively.

The lens guide 361 has a pair of second magnet holding portions 368a and 368b (see FIG. 11) for holding second magnets 371a and 371b of a pair of second actuators 370a and 370b described later. In the case of the present embodiment, the pair of second magnet holding portions 368a and 368b respectively overlap with the coil placement portions 322d and 322e of the second base 32 with a predetermined interval in the Z direction.

[spring]
A plurality of (four in the present embodiment) springs 362 a to 362 d (see FIGS. 12, 13, and 17) elastically support the lens guide 361 on the second base 32. In this state, the lens unit 33 can be displaced in the X direction and the Y direction with respect to the second base 32.

In the case of the present embodiment, the spring 362a supports the end of the lens guide 361 on the X direction + side and the Y direction + side on the second base 32 (see FIG. 12). The spring 362b supports the end of the lens guide 361 on the X direction + side and the Y direction − side on the second base 32 (see FIG. 13). The spring 362c supports the end of the lens guide 361 on the X direction − side and the Y direction + side on the second base 32 (see FIG. 12). Further, the spring 362d supports the end of the lens guide 361 on the X direction side and the Y direction side on the second base 32 (see FIG. 13).

Each of the springs 362a to 362d has a first fixing portion 362f, a second fixing portion 362g, and an elastic deformation portion 362h (see FIG. 17). FIG. 17 shows the springs 362a to 362d as they are in the assembled state.

The first fixed portion 362f is fixed to a lens guide 361 which is a movable side member. The second fixed portion 362g is fixed to the second base 32 that is a fixed side member. The elastic deformation part 362h is continuous with the first fixing part 362f and the second fixing part 362g. The elastic deformation portion 362h is made of a linear member that is bent in a meandering manner, for example.

In the case of this embodiment, the elastically deformable portion 362h has directionality in the X direction. The above-described springs 362a to 362d are arranged with the same directionality in the X direction of the elastic deformation portion 362h.

In this embodiment, as shown in FIG. 17, the line segment connecting the centers of the spring 362d of the spring 362a disposed in diagonal positions of the lens guide 361 as viewed from the Z direction and L _1, spring the line segment connecting the centers of the spring 362c of the 362b in the case of the L _2, (also referred to as a center position of the distributed.) intersection between L ₁ and L ₂ is, of the movable portion in the reference position the center of gravity G Match or nearly match. In the present embodiment, the movable portion refers to the lens guide 361 and each member fixed to the lens guide 361 and capable of being displaced together with the lens guide 361. Specifically, in the case of the present embodiment, the movable portion includes the lens guide 361, the lens portion 33, the AF magnets 365a and 365b of the pair of AF actuators 364a and 364b, and the second actuators 370a and 370b described later. Two magnets 371a and 371b and shield plates 6a and 6b are included.

The center of each spring is, for example, the center position in the Z direction and the center position in the X direction of each spring. The reference position of the lens guide 361 refers to a state in which the lens guide 361 is not displaced in the X direction by the autofocus function and a state in which the lens guide 361 is not displaced in the Y direction by the second shake correction device 37 described later. With this configuration, resonance of the lens guide 361 around the straight line L ₃ centroid parallel to the street and Z direction of the movable portion can be reduced.

The springs 362a to 362d as described above are arranged as follows. When a straight line passing through the center of gravity G and parallel to the direction of the second optical axis (that is, the X direction) is a straight line L ₄ (see FIG. 17), the pair of springs 362a and 362b on the X direction + side are and symmetrically with respect to L _4, it is arranged at a predetermined distance apart two positions in the X-direction positive side from the center of gravity G (right side in FIG. 17). On the other hand, X-direction - the side of the pair of springs 362c, 362d are symmetrical with respect to the straight line _{L 4,} and, X-direction from the center of gravity G - arranged at the predetermined distance apart two positions (the left side in FIG. 17) side The Thus, the intersection between the straight line L ₁ and the straight line L ₂ coincides with the center of gravity G.

[FPC]
The FPC 363 (see FIGS. 11 and 18) is a flexible printed circuit board and is fixed to the second base 32. Such an FPC 363 supplies electric power to, for example, an AF device 36 and second actuators 370a and 370b of the second shake correction device 37 which will be described later.

Specifically, the FPC 363 is a continuous flexible printed circuit board, and includes a pair of first coil fixing portions 363a and 363b and a pair of second coil fixing portions 363d and 363e.

In the first coil fixing portion 363a, an AF coil 366a (see FIG. 11) of the AF device 36 is fixed via a substrate 7a. In this state, the first coil fixing portion 363 a and the AF coil 366 a are disposed in the bottom surface through-hole 321 a of the second base 32.

On the other hand, the AF coil 366b (see FIG. 11) of the AF device 36 is fixed to the first coil fixing portion 363b via the substrate 7b. In this state, the first coil fixing portion 363b and the AF coil 366b are disposed in the bottom surface through hole 321b of the second base 32. The above-described substrates 7a and 7b are fixed to the first coil fixing portions 363a and 363b with solder. In contrast to such a structure, when the FPC reinforcing plate is provided on the first coil fixing portions 363a and 363b, the above-described substrates 7a and 7b are omitted, and the AF coils 366a and 366b are directly provided on the FPC 363. You can also. In the case of such a structure, since the boards 7a and 7b can be omitted, soldering between the boards 7a and 7b and the first coil fixing portions 363a and 363b is also unnecessary.

The second coil fixing portions 363d and 363e respectively overlap the first coil fixing portions 363a and 363b with a predetermined interval in the Z direction. Second coils 372a and 372b of a second shake correction device 37 to be described later are fixed to the surfaces of the second coil fixing portions 363d and 363e, respectively (see FIG. 11). In this state, the second coil fixing portions 363d and 363e are respectively placed on the surfaces of the coil placement portions 322d and 322e of the second base 32.

[AF actuator]
Each of the pair of AF actuators 364a and 364b (see FIG. 11) is a third actuator for autofocus. The Y direction + side AF actuator 364a includes an AF magnet 365a and an AF coil 366a. On the other hand, the Y direction negative side AF actuator 364b includes an AF magnet 365b, an AF coil 366b, and an AF Hall element 367.

In such AF actuators 364a and 364b, the AF magnets 365a and 365b are fixed to the lens guide 361 which is a movable side member, and the AF coils 366a and 366b are fixed to the second base 32 which is a fixed side member. It is a moving magnet type actuator fixed via the.

The AF actuators 364a and 364b may be moving coil actuators. Since the structure of each part constituting such AF actuators 364a and 364b is substantially the same as a conventionally known structure, detailed description thereof is omitted. Hereinafter, the arrangement of the respective parts constituting the AF actuators 364a and 364b will be described.

The AF magnets 365a and 365b are held by the first magnet holding portions 361a and 361b of the lens guide 361, respectively. In this state, the AF magnets 365a and 365b are disposed in the magnet spaces 322g and 322h (see FIG. 11) of the second base 32, respectively. In this embodiment, the AF magnets 365a and 365b are each magnetized in the Z direction and have two magnetic poles on one side.

The AF coils 366a and 366b are so-called air-core coils having an oval shape. The AF coils 366a and 366b are fixed to the first coil fixing portions 363a and 363b of the FPC 363 via the substrates 7a and 7b in a state where the long axis coincides with the Y direction. The AF hall element 367 is disposed inside the AF coil 366b in the radial direction.

In the case of the AF actuators 364a and 364b configured as described above, when a current flows through the AF coils 366a and 366b through the FPC 363 under the control of an autofocus control unit (not shown), the AF magnets 365a and A Lorentz force is generated that displaces 365b in the X direction. Since the AF magnets 365a and 365b are fixed to the lens guide 361, the lens guide 361 is displaced in the X direction (also referred to as a third direction) based on the Lorentz force. Note that the direction of displacement of the lens guide 361 is switched by controlling the direction of the current flowing through the AF coils 366a and 366b. In this way, autofocus is performed.

In the present embodiment, as described above, the resonance of the lens guide 361 around the straight line L ₃ (see FIG. 17) is reduced by devising the arrangement of the springs 362a to 362d and the lens guide 361. However, if the resonance cannot be completely eliminated, the lens guide 361 is swung in a direction to cancel the resonance by making a difference between the driving force of the AF actuator 364a and the driving force of the AF actuator 364b. Also good. Note that, by making the currents flowing through the AF actuators 364a and 364b different, the driving force between the AF actuators 364a and 364b can be made different.

[Second shake correction device]
The second shake correction device 37 (see FIG. 5) performs shake correction in the Y direction by displacing the lens unit 33 in the Y direction (also referred to as the second direction). Such a second shake correction device 37 is arranged in the above-described second accommodation space 320 (see FIG. 4).

The second shake correction device 37 includes the lens guide 361 described above, the plurality of springs 362a to 362d described above, the FPC 363 described above, and a pair of second actuators 370a and 370b. The lens guide 361, the springs 362a to 362d, and the FPC 363 are common to the AF device 36.

The second actuator 370a (see FIG. 11) on the Y direction + side is arranged in a state of being overlapped with a predetermined interval in the Z direction (also referred to as the first direction) with respect to the AF actuator 364a. . Such a second actuator 370a has a second magnet 371a and a second coil 372a.

On the other hand, the second actuator 370b on the Y direction minus side is arranged in a state of being overlapped with the above-described AF actuator 364b at a predetermined interval in the Z direction (also referred to as the first direction). Such a second actuator 370b includes a second magnet 371b, a second coil 372b, and a second Hall element 373.

By arranging the second actuators 370a and 370b and the AF actuators 364a and 364b as described above, the centers of the driving forces of the second actuators 370a and 370b coincide with the centers of the driving forces of the AF actuators 364a and 364b. This configuration makes it difficult for the lens guide 361 to be tilt-displaced (that is, swinging displacement about an axis parallel to the X direction or the Y direction) during autofocus and shake correction.

In the second actuators 370a and 370b as described above, the second magnets 371a and 371b are fixed to the lens guide 361 which is a movable member, and the second coils 372a and 372b are fixed to the second base 32 which is a fixed member. This is a moving magnet type actuator fixed via an FPC 363. However, the second actuators 370a and 370b may be moving coil type actuators.

Since the structure of each part constituting the second actuators 370a and 370b is almost the same as a conventionally known structure, detailed description thereof is omitted. Hereinafter, the arrangement of each part constituting the second actuators 370a and 370b will be described.

The second magnets 371a and 371b are held by the second magnet holding portions 368a and 368b of the lens guide 361, respectively. In the present embodiment, the second magnets 371a and 371b are each magnetized in the Z direction and have two magnetic poles on one side.

The second coils 372a and 372b are so-called air-core coils each having an oval shape. The second coils 372a and 372b are respectively fixed to the second coil fixing portions 363d and 363e of the FPC 363 in a state where the long axis coincides with the X direction.

In this state, the second coils 372a and 372b respectively overlap the second magnets 371a and 371b with a predetermined interval in the Z direction. The second Hall element 373 is fixed on the surface of the second coil fixing portion 363e of the FPC 363 and on the outer side in the radial direction of the second coil 372b. Note that the second Hall element 373 may be arranged inside the second coil 372b in the radial direction.

In the case of the second actuators 370a and 370b having the above-described configuration, when a current flows through the second coils 372a and 372b through the FPC 363 under the control of a shake correction controller (not shown), the second magnet Lorentz force that displaces 371a and 371b in the Y direction is generated. Since the second magnets 371a and 371b are respectively fixed to the lens guide 361, the lens guide 361 is displaced in the Y direction based on the Lorentz force. The direction of displacement of the lens guide 361 is switched by controlling the direction of the current flowing through the second coils 372a and 372b.

In the case of the present embodiment, in order to prevent crosstalk between the second actuators 370a and 370b and the AF actuators 364a and 364b, it is between the second magnets 371a and 371b and the AF magnets 365a and 365b in the Z direction. Magnetic metal shield plates 6a and 6b are arranged in the portion.

[Reference material]
The reference member 38 (see FIGS. 12 and 19) is a plate-like member fixed to the end portion on the X direction + side of the second base 32. The side surface on the + X direction side of the reference member 38 becomes a reference surface in the X direction of the image sensor module 4 described later. A through hole 38 a that guides the light that has passed through the lens portion 33 to the imaging element module 4 is formed in the central portion of the reference member 38.

A pair of stopper portions 380a and 380b are provided on the side surface on the X direction side of the reference member 38 to restrict the displacement of the lens portion 33 on the X direction + side during autofocusing to a predetermined range. As shown in FIG. 5, the end surfaces on the X direction − side of the stopper portions 380a and 380b (hereinafter simply referred to as “stopper surfaces”) are in the state where the lens guide 361 is at the reference position, as shown in FIG. It faces a part of the X-direction with a predetermined interval.

In the case of the present embodiment, each of the stopper surfaces faces the end surface on the X direction + side of the first magnet holding portions 361a and 361b of the lens guide 361 (hereinafter referred to as “first stoppered surface”) in the X direction. is doing. When the lens guide 361 is displaced in the X direction + side larger than the predetermined interval, the first stopper surface comes into contact with the stopper surface. In this way, in the lens guide 361, the displacement in the Y direction + side is regulated within a predetermined range.

On the other hand, the lens guide 361 has an X-direction end surface (hereinafter referred to as “second stoppered surface”) of the first magnet holding portions 361a and 361b of the lens guide 361, the second stoppered surface and the X direction. The displacement on the negative side in the Y direction is restricted to a predetermined range by a part of the second base 32 (also referred to as a second stopper surface) that faces the surface.

Further, the lens guide 361 has its displacement in the Y direction restricted within a predetermined range by both end surfaces of the first magnet holding portions 361a and 361b in the Y direction and the pair of second side wall portions 322a and 322b of the second base 32. Yes.

Further, the displacement of the lens guide 361 in the Z direction + side is regulated within a predetermined range by the end surface on the Z direction + side of the lens guide 361 and the second cover 31. Further, the displacement of the lens guide 361 in the Z direction-side is restricted to a predetermined range by the end surface of the lens guide 361 in the Z direction-side and the bottom surface portion 321 of the second base 32.

In addition, the spring arrangement | positioning part 324a (refer FIG. 2, 3) which can arrange | position the spring 362a to the Y direction + side rather than the stopper part 380a is formed. On the other hand, a spring arrangement part 324b is formed in which the spring 362b can be arranged on the Y direction minus side from the stopper part 380b.

Gel-shaped damping members that cover the springs 362a and 362b may be disposed in the spring placement portions 324a and 324b, respectively.

[1.1.4 Image sensor module]
The image sensor module 4 is arranged on the X direction + side with respect to the lens unit 33. The imaging element module 4 includes an imaging element such as a charge-coupled device (CCD) type image sensor or a complementary metal oxide semiconductor (CMOS) type image sensor. The image sensor of the image sensor module 4 captures the subject image formed by the lens unit 33 and outputs an electrical signal corresponding to the subject image. A printed wiring board (not shown) is electrically connected to the substrate (not shown) of the imaging element module 4, and the power supplied to the imaging element module 4 and the subject imaged by the imaging element module 4 through the printed wiring board. An image electrical signal is output. Such an image pickup device module 4 can employ a conventionally known structure.

[1.2 Operation and effect of this embodiment]
In the case of the camera actuator and camera module 1 of the present embodiment having the above-described configuration, only the first actuator 244 of the first shake correction device 24 is provided in the prism module 2. In addition, the first actuator 244 is arranged on the back side (that is, the Z direction-side) of the prism 23 so as to overlap the prism 23 in the Z direction (that is, the direction of the first optical axis). Accordingly, camera actuators are not arranged around the prism 23 in the X direction and the Y direction. For this reason, the freedom degree of design in the circumference of the X direction of the prism 23 and the circumference of the Y direction can be improved. Such an improvement in design freedom contributes to the miniaturization of the prism module 2 in the X direction and the Y direction.

In the lens module 3, the pair of second actuators 370 a and 370 b that are driving devices of the second shake correction device 37 overlap the pair of AF actuators 364 a and 364 b with a predetermined interval in the Z direction. Arranged in a state. Such an arrangement contributes to miniaturization of the lens module 3 in the X direction and the Y direction.

Conventionally, for example, a camera mounting device (smartphone M in the case of illustration) equipped with a dual camera composed of a wide-angle camera OC1 and a telephoto camera OC2 as shown in FIG. 22 is known. In the case of such a smartphone M, the wide-angle camera OC1 is disposed on the X direction-side (left side in FIG. 22B) of the telephoto camera OC2. Specifically, when the camera module 1 of the present embodiment shown in FIGS. 1A and 4 is a telephoto camera OC2, the wide-angle camera OC1 is closer to the X direction-side than the camera module 1 (the left side of FIGS. 1A and 4). ). The smartphone M also includes a control unit (not shown) that controls the wide-angle camera OC1 and the telephoto camera OC2. Note that the wide-angle camera OC1 may be arranged closer to the Y direction + side (front side in FIG. 4) than the camera module 1.

In such a structure, it is known that so-called crosstalk occurs when the camera actuator of the telephoto camera OC2 and the camera actuator of the wide-angle camera OC1 are close to each other. As an arrangement in which such crosstalk becomes a problem, for example, in FIGS. 1A and 4, there is a case where the first actuator of the telephoto camera OC2 is arranged on the X direction minus side of the prism 23.

In contrast, in the case of the present embodiment, the first actuator 244 of the camera module 1 is disposed on the Z direction-side of the prism 23 far from the wide-angle camera OC1. Therefore, when applied to the above-described dual camera, the camera module 1 according to the present embodiment can suppress the occurrence of crosstalk with the actuator of the wide-angle camera OC1.

If the camera module 1 of the present embodiment is employed as the telephoto camera OC2 of the smartphone M as described above, the first actuator 244 is disposed at a position far from the actuator of the wide-angle camera OC1, and thus the wide-angle camera OC1 and It is possible to prevent crosstalk.

[1.3 Notes]
In this embodiment, the second actuators 370a and 370b of the second shake correction device 37 are arranged on the Z direction + side, and the AF actuators 364a and 364b of the AF device 36 are arranged on the Z direction − side. The second actuators 370a and 370b of the device 37 may be disposed on the negative side in the Z direction, and the AF actuators 364a and 364b of the AF device 36 may be disposed on the positive side in the Z direction.

Note that the camera module 1 of the present embodiment includes the prism module 2 and the lens module 3 described above at the same time. However, the prism module 2 and the lens module 3 described above are not necessarily performed at the same time. That is, a camera module including one of the prism module 2 and the lens module 3 can be implemented. Further, a part of the configuration may be taken out from the prism module 2 or the lens module 3 described above.

[2. Embodiment 2]
20 and 21 are perspective views showing a camera module 1a according to Embodiment 2 of the present invention. The camera module 1a according to the present embodiment is different from the first embodiment described above in the structure of an urging mechanism that presses the holder 241 of the prism module 2a in the Z direction-side (that is, the direction toward the first base 22). Other structures of the camera module 1a are the same as those of the first embodiment. For this reason, hereinafter, the structure of the camera module 1a according to the present embodiment will be described focusing on the structure of the portion different from that of the first embodiment.

The prism module 2a of the camera module 1a does not have the holding spring 242 (see FIGS. 9A, 9B, and 10) that the prism module 2 of Embodiment 1 has. Instead, the prism module 2a has a rectangular annular yoke 26 made of magnetic metal and fixed to the back surface of the FPC 25 fixed to the back side surface of the first base 22 (that is, the surface on the Z direction side). The shape of the yoke 26 is not limited to the case of this embodiment.

In the case of the present embodiment, the holder 241 is formed based on the magnetic force in the attracting direction generated between the first magnet 244a fixed to the back side surface of the holder 241 (that is, the Z direction-side surface) and the yoke 26. , Pressed against the first base 22. Thereby, the holder 241 is positioned in the Z direction.

In the case of the present embodiment, when the first actuator 244 is de-energized, the holder 241 returns to the initial position on the basis of the magnetic force generated between the first magnet 244a and the yoke 26 in the mutually attracting direction. To do. Other structures, operations and effects are the same as those of the first embodiment.

[3. Embodiment 3]
A camera module according to Embodiment 3 of the present invention will be described with reference to FIGS. In the case of this embodiment, the structure of the prism module 2b is different from that of the first embodiment. Specifically, the structure of the portion that supports the holder 241A in a swingable manner with respect to a first base 22a described later is different from that of the first embodiment.

On the other hand, the structure of the lens module is the same as that of the first embodiment. Hereinafter, the structure of the camera module according to the present embodiment will be described with a focus on the structure of parts different from the first embodiment.

[3.1 Prism module]
The prism module 2b of the camera module according to the present embodiment includes a first cover 21, a first base 22a, a prism 23, and a first shake correction device 24a. The structures of the first cover 21 and the prism 23 are the same as those in the first embodiment.

[First base]
The first base 22a is a box-like member having an opening on the Z direction + side and the X direction + side, respectively, as in the first base 22 of the first embodiment. A base first opening 220 (see FIG. 25) is formed in the bottom wall portion 229 on the negative side in the Z direction of the first base 22a.

In the case of this embodiment, a first coil 244c and a first hall element 244e of a first actuator 244A described later, and a spacer 246 described later are disposed in the base first opening 220.

Also, the first base 22a supports a holder 241A (see FIGS. 23, 28, and 29) of a first shake correction device 24a, which will be described later, so as to be able to swing around a first axis parallel to the Y direction. For this purpose, the first base 22a has a first receiving portion 225c and a second receiving portion 225d (see FIG. 26) for holding a swing guide member 245 described later.

The first receiving part 225c is provided on the first side wall part 224a on the + Y direction side of the first base 22a. On the other hand, the second receiving part 225d is provided on the first side wall part 224b on the Y direction minus side of the first base 22a.

The first receiving portion 225c and the second receiving portion 225d have a shape that is symmetrical with respect to the Y direction. Specifically, each of the first receiving portion 225c and the second receiving portion 225d has a substantially V-shaped cutout shape that opens in the Z direction + side when viewed in the Y direction.

Further, the first receiving portion 225c and the second receiving portion 225d are respectively closed at the center of the first base 22a in the Y direction by the stopper surfaces 225e and 225f. On the other hand, the first receiving portion 225c and the second receiving portion 225d each open on the outer side in the Y direction (also referred to as the width direction) of the first base 22a.

A first positioning convex portion 226a and a second positioning convex portion 227a (see FIGS. 26 and 27) are provided on the end surfaces on the Z direction + side of the first side wall portions 224a and 224b, respectively. The first positioning protrusions 226a and the second positioning protrusions 227a engage with a pair of swing support springs 243 (see FIGS. 27 and 30) described later to position the pair of swing support springs 243.

[First shake correction device]
As in the first embodiment described above, the first shake correction device 24a swings the prism 23 around the first axis parallel to the Y direction, and performs shake correction in the rotational direction around the first axis. Do. Such a first shake correction device 24a is disposed in the first accommodation space 223 (see FIG. 25).

The first shake correction device 24a includes a pair of swing guide members 245, a pair of swing support springs 243, a spacer 246, a holder 241A, and a first actuator 244A.

Also in the case of the present embodiment, in the first shake correction device 24a, the holder 241A is swingably supported by the first base 22a. In this state, the holder 241A swings around the first axis based on the driving force of the first actuator 244A. When the first actuator 244A is driven under the control of a control unit (not shown), the holder 241A and the prism 23 swing around the first axis. Thereby, the shake in the rotational direction around the first axis is corrected. Hereinafter, a specific structure of each member included in the first shake correction device 24a will be described.

[Swing guide member]
The pair of swing guide members 245 are, for example, ceramic, metal, and synthetic resin spheres. One of the pair of swing guide members 245 (that is, the Y direction + side) swing guide member 245 is disposed in the first receiving portion 225c of the first base 22a. On the other hand, the other (that is, the Y direction minus side) swing guide member 245 is disposed in the second receiving portion 225d of the first base 22a.

In this state, one swing guide member 245 contacts the first receiving portion 225c, and the other swing guide member 245 contacts the second receiving portion 225d at two locations.

Also, the Z direction + side half of the pair of swing guide members 245 is a swing guide surface 245a (also referred to as a swing guide portion). The swing guide surface 245a protrudes in the Z direction + side from the first receiving portion 225c and the second receiving portion 225d.

Further, the end on the Z direction + side of each swing guide surface 245a is a portion other than the first positioning convex portion 226a and the second positioning convex portion 227a on the end surface on the Z direction + side of the first side wall portions 224a and 224b. It is located on the Z direction + side.

The swing guide member 245 is not limited to a sphere, and may be, for example, a hemisphere, a cylinder, or a half cylinder. Further, the swing guide member 245 may be integrated with the first base 22a. That is, the swing guide member may be configured by a part of the first base 22a.

[Swing support spring]
The pair of swing support springs 243 support a holder 241A, which will be described later, so as to be swingable with respect to the first base 22a. Each of the pair of swing support springs 243 is a metal leaf spring and is disposed on the Z direction + side of the pair of swing guide members 245.

Hereinafter, one (that is, the Y direction + side) swing support spring 243 of the pair of swing support springs 243 will be described. The other swing support spring 243 (that is, the Y direction minus side) is symmetrical with the other swing support spring 243 in the Y direction.

As shown in FIGS. 30 and 31, one swing support spring 243 has a pair of first locking portions 243a and 243b, a second locking portion 243c, a torsion allowing portion 243g, and a spring side guide surface 243h.

Among the pair of first locking portions 243a and 243b, one (that is, the X direction + side) first locking portion 243a is provided at an end of the one swing support spring 243 on the X direction + side. One such first locking portion 243a has a first through hole 243d.

On the other hand, the first locking portion 243b on the other side (that is, the X direction minus side) is provided at the end on the X direction minus side of the one swing support spring 243. The other first locking portion 243b has a first through hole 243e. The pair of first locking portions 243a and 243b are continued by a continuous portion 243i extending in the X direction.

The Z direction-side surfaces of the pair of first locking portions 243a and 243b are bonded and fixed to the Z direction + side end surfaces of the first side wall portion 224a of the first base 22a. In this state, the first positioning protrusions 226a and 227a of the first base 22a are inserted through the first through holes 243d and 243e, respectively.

In the case of the other (Y direction minus side) swing support spring 243, the Z direction minus side surfaces of the pair of first locking portions 243a and 243b are in the Z direction on the first side wall portion 224b of the first base 22a. Bonded and fixed to the + side end face.

The 2nd latching | locking part 243c is provided in the part in the X direction of 1st latching | locking part 243a, 243b via the clearance gap between X directions. The second locking portion 243c has a pair of second through holes 243f.

The surface on the Z direction + side of the second locking portion 243c is bonded and fixed to a spring seat surface 241s (see FIG. 32) of a holder 241A described later. In this state, the pair of holder-side positioning convex portions 241u (see FIG. 32) of the holder 241A are inserted through the pair of second through holes 243f, respectively. In the case of the other (Y direction-side) swing support spring 243, the Z-direction + side surface of the second locking portion 243c is bonded and fixed to the spring seat surface 241t of the holder 241A.

The twist allowable portion 243g is a plate-like member extending in the Y direction, and is continuous with the intermediate portion in the X direction of the continuous portion 243i and the second locking portion 243c. Such a twist allowing portion 243g allows the second locking portion 243c to twist with respect to the first locking portions 243a and 243b by being twisted.

Further, the torsion permitting portion 243g allows relative displacement in the Z direction between the first locking portions 243a and 243b and the second locking portion 243c by elastic deformation.

The spring side guide surface 243h is configured by the back surface of the second locking portion 243c (that is, the surface on the Z direction side). Such a spring-side guide surface 243h abuts on the swing guide surface 245a of the swing guide member 245.

The pair of swing support springs 243 are plate members that are entirely flat in a free state (also referred to as a non-assembled state). On the other hand, in the assembled state, the pair of swing support springs 243 is configured such that the second locking portion 243c is positioned more on the Z direction + side than the first locking portions 243a and 243b based on the elastic deformation of the torsion allowing portion 243g. (See FIG. 31).

Specifically, in the assembled state, the torsion allowing portion 243g is elastically deformed so as to be directed toward the Z direction + side toward the second locking portion 243c. Based on such elastic deformation, the spring-side guide surfaces 243h of the pair of swing support springs 243 bias the swing guide member 245 toward the Z direction-side.

[Spacer]
The spacer 246 is disposed in a bottom groove 229a (see FIGS. 26 and 29) formed in the Z direction-side surface (that is, the bottom surface) of the bottom wall portion 229 of the first base 22a. Such a spacer 246 prevents the first magnet 244f and the first coil 244c from colliding in the Z direction.

Specifically, the spacer 246 is a plate-like member and has a spacer-side through hole 246a in which a first coil 244c of a first actuator 244A to be described later can be disposed.

A part of the spacer 246 is disposed between a first coil 244c of the first actuator 244A described later and the base first opening 220 (see FIGS. 25 and 26).

The Z direction + side surface (also referred to as a collision prevention surface) of the portion (also referred to as a collision prevention portion) arranged around the first coil 244c in the spacer 246 is the surface on the Z direction + side of the first coil 244c. Rather than the Z direction + side (see FIG. 25).

The anti-collision surface is opposed to the anti-collision protrusions 241m, 241n, and 241p (see FIGS. 25 and 32) of the holder 241A described later in the Z direction.

In this state, a gap in the Z direction that exists between the collision prevention surface and the collision prevention convex portions 241m, 241n, and 241p exists between the first magnet 244f and the first coil 244c of the first actuator 244A. It is smaller than the gap in the Z direction.

Accordingly, even when the first magnet 244f is displaced in the Z direction − side together with the holder 241A described later, the collision preventing convex portions 241m, 241n, and 241p are applied to the spacer 246 before the first magnet 244f contacts the first coil 244c. Abut. Thereby, the collision between the first magnet 244f and the first coil 244c is prevented. The spacer 246 may be omitted. Although illustration is omitted, when the spacer 246 is omitted, a part of the surface (that is, the surface) on the Z direction + side of the bottom wall portion 229 of the first base 22a (also referred to as a collision preventing surface) is the first. The coil 244c is positioned closer to the Z direction + side than the Z direction + side surface. In this case, the positions of the collision prevention convex portions 241m, 241n, and 241p (see FIGS. 25 and 32) of the holder 241A described later are adjusted, and the collision prevention surface and the collision prevention convex portions 241m, 241n, and 241p are arranged in the Z direction. Make them face each other. Thereby, the contact between the first magnet 244f and the first coil 244c is prevented.

[holder]
The holder 241A (see FIGS. 29 and 32) is made of, for example, synthetic resin, and holds the prism 23 in a swingable state with respect to the first base 22a.

The holder 241A includes a placement surface 241a, a pair of opposing wall portions 241f, 241g, a plurality of collision prevention convex portions 241m, 241n, 241p, and a pair of overhang portions 241q, 241r. The structure of the mounting surface 241a and the pair of opposing wall portions 241f is substantially the same as that of the holder 241 of the first embodiment.

The plurality of collision prevention convex portions 241m, 241n, and 241p are respectively provided at a plurality of locations (three locations in the present embodiment) on the back surface (that is, the surface in the Z direction-side) of the holder 241A. In addition, the position of the collision prevention convex part is not limited to the position of this embodiment.

The tip surfaces (that is, the end surface on the Z direction side) of the collision preventing convex portions 241m, 241n, and 241p are located on the Z direction side with respect to the other parts of the holder 241A. The front end surfaces of the collision preventing convex portions 241m, 241n, and 241p are opposed to the surface of the spacer 246 (that is, the surface in the Z direction + side) through a gap in the Z direction.

The pair of overhang portions 241q and 241r are provided on the pair of opposing wall portions 241f and 241g, respectively. Each of the pair of overhang portions 241q and 241r supports the holder 241A so as to be swingable with respect to the first base 22a.

Specifically, one (that is, the Y direction + side) overhanging portion 241q is provided on the Y direction + side surface of the opposing wall portion 241f so as to protrude from the side surface to the Y direction + side.

On the other hand, the other (that is, Y direction-side) overhanging portion 241r protrudes from the side surface to the Y direction-side of the opposing wall portion 241g.

The pair of overhang portions 241q and 241r have flat spring-shaped spring seat surfaces 241s and 241t on the back surface (that is, the surface in the Z direction-side), respectively.

A pair of holder-side positioning projections 241u protruding in the Z direction-side are formed at two locations spaced apart in the X direction of the spring seat surfaces 241s and 241t.

The surfaces of the second locking portions 243c of the pair of swing support springs 243 are bonded and fixed to the spring seat surfaces 241s and 241t, respectively. In this state, the pair of holder-side positioning protrusions 241u are inserted through the pair of second through holes 243f of the swing support spring 243, respectively. With this structure, the holder 241A is swingably supported with respect to the first base 22a.

[First actuator]
The first actuator 244A swings the holder 241A about the first axis. In the case of the present embodiment, the first axis is a Y axis that passes through a contact portion between the swing guide surface 245a of the pair of swing guide members 245 and the spring side guide surface 243h of the pair of swing support springs 243. Parallel straight lines.

As in the first embodiment, the first actuator 244A is disposed on the back side of the prism 23 and the holder 241A so as to overlap the optical path bending surface 231 of the prism 23 and the holder 241A in the Z direction (that is, the direction of the first optical axis). That is, it is arranged on the Z direction minus side. Note that also in the present embodiment, the direction of the first optical axis corresponds to the first direction.

Also in this embodiment, the first actuator 244A includes the first magnet 244f, the first coil 244c, and the first Hall element 244e.

The first magnet 244f is fixed to the back side surface of the holder 241A which is a movable side member (that is, the surface on the Z direction side). In the present embodiment, the first magnet 244f is composed of two magnet elements adjacent in the X direction. Each of these magnet elements is magnetized in the Z direction and has one magnetic pole on one side. The direction of the magnetic pole of each magnet element is opposite to each other.

According to the first magnet 244f as described above, the non-magnetized portion at the center in the X direction of the first magnet 244f can be reduced as compared with the structure having two magnetic poles on one side as in the first embodiment.

The first coil 244c and the first Hall element 244e are fixed to the surface of the flexible printed circuit board (hereinafter referred to as FPC) 25 (that is, the surface in the Z direction + side) fixed to the back side surface of the first base 22a. .

The first coil 244c and the first hall element 244e are disposed in the base first opening 220 (see FIGS. 25 and 26) of the first base 22a. In the case of the present embodiment, the first coil 244c is a so-called air-core coil having an oval shape. The first hall element 244e is disposed inside the first coil 244c in the radial direction. A spacer 246 is disposed outside the first coil 244c.

The first actuator 244A having the above configuration swings the holder 241A around the first axis under the control of a camera shake correction control unit (not shown), as in the first embodiment.

Hereinafter, the operation when the holder 241A swings around the first axis will be described with reference to FIG.

When the current flows through the first coil 244c, the first actuator 244A generates a Lorentz force that displaces the first magnet 244f in the X direction. Since the first magnet 244f is fixed to the holder 241A, a force for displacing the holder 241A in the X direction (for example, the direction of arrow F in FIG. 31) acts on the holder 241A based on the Lorentz force.

By the way, as described above, the spring-side guide surfaces 243h of the pair of swing support springs 243 fixed to the holder 241A have the swing guide surfaces 245a of the pair of swing guide members 245 in the Z direction minus side (see FIG. 31 is pressed in the direction) of the arrow _{Z a} of.

Based on press as described above, inclined as chain line L ₁ two-dot in FIG. 31 (i.e., roll on the swinging guide surface 245a). Incidentally, for convenience of explanation, the inclination angle of the two-dot chain line L ₁ is shown in exaggerated state than the actual inclination angle of each spring guide surfaces 243 h.

At this time, each torsion allowing portion 243g of the pair of swing support springs 243 is twisted so as to allow the inclination of each spring side guide surface 243h. As described above, when each spring-side guide surface 243h is inclined, the holder 241A swings around the first axis.

Note that the direction of displacement of the holder 241A is switched by controlling the direction of the current flowing through the first coil 244c. When the energization of the first actuator 244A is cut off, the holder 241A returns to the initial position based on the elastic force of the pair of swing support springs 243. The initial position of the holder 241A is a state where the holder 241A is not swinging. Other structures, operations and effects are the same as those of the first embodiment.

[4. Embodiment 4]
A camera module according to Embodiment 4 of the present invention will be described with reference to FIG. In the case of the present embodiment, the structure of the lens module is different from that of the first embodiment. In particular, in the case of the present embodiment, the structures of the pair of AF actuators 364c and 364d and the pair of second actuators 370c and 370d constituting the lens module are different from those of the first embodiment.

Mainly in a pair of AF actuators 364c and 364d described later, the structure of the AF magnets 365a and 365b, the arrangement of the AF hall element 367a, and the newly provided second AF magnets 369a and 369b are implemented. Different from Form 1. Further, in the pair of second actuators 370c and 370d, the structures of the second magnets 371c and 371d and the arrangement of the second Hall elements 373 are different from those of the first embodiment.

Hereinafter, the structure of the pair of AF actuators 364c and 364d and the pair of second actuators 370c and 370d will be described with reference to FIG. FIG. 33 is a perspective view showing only the pair of AF actuators 364c and 364d and the pair of second actuators 370c and 370d.

Although illustration is omitted, the structure of the lens guide is also different from the lens guide 361 (see FIGS. 11 and 16) of the first embodiment.

The structure of the lens guide will be briefly described together with the description of the pair of AF actuators 364c and 364d and the pair of second actuators 370c and 370d. The structure of the lens module other than the pair of AF actuators 364c and 364d, the pair of second actuators 370c and 370d, and the lens guide is substantially the same as the lens module 3 of the first embodiment.

The structure of the prism module is the same as that of the first to third embodiments. Hereinafter, the structure of the camera module according to the present embodiment will be described focusing on the structure of parts different from the first embodiment.

[4.1 AF actuator]
The pair of AF actuators 364c and 364d are third actuators for autofocus. One (that is, the Y direction + side) AF actuator 364c includes an AF magnet 365a, an AF coil 366a, and an AF second magnet 369a.

On the other hand, the other (ie, Y direction-side) AF actuator 364d includes an AF magnet 365b, an AF coil 366b, an AF hall element 367a, and an AF second magnet 369b.

The structure and arrangement of the AF magnets 365a and 365b and the AF coils 366a and 366b are the same as those in the first embodiment. The pair of AF actuators 364c and 364d are symmetrical in the Y direction except for the AF hall element 367a. Therefore, the description of the same structure as in the first embodiment will be omitted, and only the structure and arrangement of the AF hall element 367a and the AF second magnet 369b in the other AF actuator 364d will be described.

The AF hall element 367a of the other AF actuator 364d incorporates a device driver for the AF apparatus. Such an AF hall element 367a is disposed in the vicinity of the AF coil 366b and closer to the X direction minus side than the AF coil 366b.

AF Hall element 367a is directly fixed to FPC (not shown) by solder. Further, a reinforcing plate (not shown) is provided on the back surface of the portion where the AF hall element 367a is fixed in the FPC (not shown). The AF hall element 367a may be fixed to the FPC via a substrate (not shown). In this case, the reinforcing plate may be omitted.

The second AF magnet 369b is a magnet different from the AF magnet 365b. Specifically, the second magnet for AF 369b has a magnetization direction in the Z direction and one magnetic pole on one side.

The second AF magnet 369b faces the AF hall element 367a in the Z direction in the vicinity of the AF magnet 365b and in the X direction-side. The AF second magnet 369b increases the magnetic flux density that passes through the AF hall element 367a. The second AF magnet 369b is also held by a holding portion provided in a lens guide (not shown).

[4.2 Second actuator]
Of the pair of second actuators 370c and 370d, one (that is, the Y direction + side) second actuator 370c has a predetermined interval in the Z direction with respect to one (that is, the Y direction + side) AF actuator 364c. Open and face each other. One such second actuator 370 c includes a second magnet 371 c, a second coil 372 a, and a second Hall element 373.

On the other hand, the other (ie, Y direction-side) second actuator 370d faces the other (ie, Y direction-side) AF actuator 364d at a predetermined interval in the Z direction. The other second actuator 370d has a second magnet 371d and a second coil 372b.

The structure and arrangement of the second coils 372a and 372b are the same as those in the first embodiment. The pair of second actuators 370 c and 370 d are symmetrical in the Y direction except for the second Hall element 373. Therefore, the description of the same structure as that of the first embodiment will be omitted, and only the structure and arrangement of the second magnet 371c and the second Hall element 373 in one second actuator 370c will be described below.

Each of the second magnets 371c in one second actuator 370c includes two magnet elements adjacent in the Y direction. Each magnet element is a rectangular parallelepiped that is long in the X direction, and is magnetized in the Z direction. The direction of the magnetic pole of each magnet element is opposite to each other. Each of the second magnets 371c is held by a holding portion provided in a lens guide (not shown).

The second Hall element 373 is provided near the second coil 372a and closer to the Z direction-side than the second coil 372a. The second Hall element 373 is directly fixed to the FPC (not shown) by solder. Such an arrangement mode of the second Hall element 373 enables the second coil 372a to be enlarged. If the large second coil 372a is employed, the output of the second shake correction device 37 increases.

[4.3 Notes]
Magnetic metal shield plates 6a and 6b are provided between the second magnets 371c and 371d and the AF magnets 365a and 365b in the Z direction. Thereby, crosstalk between the pair of second actuators 370c and 370d and the pair of AF actuators 364c and 364d is prevented. Other structures, operations and effects are the same as those of the first embodiment.

[5. Embodiment 5]
A camera module according to Embodiment 5 of the present invention will be described with reference to FIGS. In the case of the present embodiment, the structure of the lens module is different from that of the first embodiment. In particular, in the case of this embodiment, the structures of the pair of AF actuators 364e and 364f, the pair of second actuators 370e and 370f, and the FPC 363A that constitute the lens module are different from those of the first embodiment.

Mainly, in the pair of AF actuators 364e and 364f, the structure and number of AF magnets 365a and 365b, the number of AF coils 366a and 366b, and the arrangement of AF hall elements 367a are different from those of the first embodiment.

[5.1 About AF actuator]
Each of the pair of AF actuators 364e and 364f is a third actuator for autofocus. One (that is, the Y direction + side) AF actuator 364e includes a pair of AF magnets 365a, a pair of AF coils 366a, and an AF Hall element 367a.

On the other hand, the other (ie, Y direction-side) AF actuator 364f includes a pair of AF magnets 365b and a pair of AF coils 366b.

The pair of AF actuators 364e and 364f are symmetrical in the Y direction except for the AF hall element 367a. Therefore, only the structure and arrangement of one AF actuator 364e will be described below.

In one AF actuator 364e, the pair of AF magnets 365a are adjacent to each other in a state separated in the X direction. Each of the pair of AF magnets 365a may have a structure in which two magnet elements having one magnetic pole on one side are combined. Alternatively, each of the pair of AF magnets 365a may have a structure having two magnetic poles on one side. Each of such a pair of AF magnets 365a is held by a holding portion of a lens guide (not shown).

The pair of AF coils 366a are adjacent to each other while being separated in the X direction. The pair of AF coils 366a is disposed on the Z direction minus side of the pair of AF magnets 365a. In this state, the pair of AF coils 366a are opposed to the pair of AF magnets 365a in the Z direction at a predetermined interval.

Specifically, each of the pair of AF coils 366a is an oval so-called air-core coil. Each of the pair of AF coils 366a is directly fixed to the first coil fixing portion 363a of the FPC 363A with the long axis aligned with the Y direction.

In addition, the 1st reinforcement plate 391a is provided in the back surface of the 1st coil fixing | fixed part 363a in FPC363A. In the FPC 363A, a first reinforcing plate 391b is provided on the back surface of the first coil fixing portion 363b to which the pair of AF coils 366a of the other AF actuator 364f is fixed. Further, a second reinforcing plate 392a made of a nonmagnetic material is provided on the back surface of the first reinforcing plate 391a. A second reinforcing plate 392b made of a nonmagnetic material is provided on the back surface of the first reinforcing plate 391b. The second reinforcing plates 392a and 392b may each be a magnetic material. The magnetic second reinforcing plates 392a and 392b contribute to the improvement of the magnetic flux density that passes through the AF coils 366a and 366b, respectively.

The AF hall element 367a incorporates a device driver for the AF apparatus. Such an AF Hall element 367a is disposed between the pair of AF coils 366a. Such an AF Hall element 367a is directly fixed to the surface of the first coil fixing portion 363a of the FPC 363A by solder.

Note that the pair of AF actuators 364e and 364f may be replaced with the pair of AF actuators 364c and 370d of the fourth embodiment described above.

[5.2 About the second actuator]
One (that is, the Y direction + side) second actuator 370e of the pair of second actuators 370e and 370f opposes one AF actuator 364e with a predetermined interval in the Z direction. Such a second actuator 370e has a second magnet 371c, a second coil 372a, and a second Hall element 373.

On the other hand, the second actuator 370f on the other side (that is, the Y direction minus side) has a second magnet 371d and a second coil 372b.

The structures of the second magnets 371c and 371d, the second coils 372a and 372b, and the second Hall element 373 are the same as those in the fourth embodiment. However, in the case of this embodiment, the arrangement of these members is different from that of the above-described fourth embodiment.

The pair of second actuators 370e and 370f are symmetrical in the Y direction except for the second Hall element 373. Therefore, the description of the same parts as those of the above-described fourth embodiment will be omitted, and parts of the second actuator 370e different from those of the above-described fourth embodiment will be described.

The second coil 372a of one of the second actuators 370e is provided closer to the Z direction + side than the second magnet 371c. The second coil 372a is fixed to the back surface of the second coil fixing portion 363f of the FPC 363A.

Further, in the FPC 363A, a first reinforcing plate 391c is provided on the surface of the second coil fixing portion 363f. In the FPC 363A, a first reinforcing plate 391d is provided on the surface of the second coil fixing portion 363g to which the second coil 372b of the other second actuator 370f is fixed. Further, a second reinforcing plate 392c made of a nonmagnetic material is provided on the surface of the first reinforcing plate 391c. A second reinforcing plate 392d made of a nonmagnetic material is provided on the surface of the first reinforcing plate 391d. The second reinforcing plates 392c and 392d may each be a magnetic body. The magnetic second reinforcing plates 392c and 392d contribute to the improvement of the magnetic flux density passing through the second coils 372a and 372b, respectively.

The second Hall element 373 is provided in the vicinity of the second coil 372a and closer to the + X direction than the second coil 372a.

[5.3 Notes]
A pair of shield plates 6a and 6b made of magnetic metal are disposed between the second magnet 371c and the AF magnet 365a and between the second magnet 371d and the AF magnet 365b in the Z direction. Is done. Thereby, crosstalk between the pair of second actuators 370e and 370f and the pair of AF actuators 364e and 364f is prevented. Other structures, operations and effects are the same as those of the first embodiment.

[6. Embodiment 6]
A camera module according to Embodiment 6 of the present invention will be described with reference to FIG. In the case of this embodiment, the structure of the pair of AF actuators 364e and 364f is the same as that of Embodiment 5 described above except that the position of the AF hall element 367a is exchanged between the pair of AF actuators 364e and 364f. It is almost the same. Therefore, detailed description of the pair of AF actuators 364e and 364f is omitted.

[6.1 About the second actuator]
One of the pair of second actuators 370g and 370h (that is, the Y direction + side) second actuator 370g includes a second magnet 371a, a second coil 372a, and a third magnet 374a.

On the other hand, the second actuator 370h on the other side (that is, the Y direction minus side) includes a second magnet 371b, a second coil 372b, a second Hall element 373, and a third magnet 374b.

The structure and arrangement of the second magnets 371a and 371b and the second coils 372a and 372b are the same as those in the first embodiment. The pair of second actuators 370g and 370h are symmetrical in the Y direction except for the second Hall element 373. For this reason, the description of the same parts as those of the first embodiment will be omitted, and only the structure and arrangement of the second Hall element 373 and the third magnet 374b in the other second actuator 370h will be described below.

The second magnets 371a and 371b may have a structure in which two magnet elements having one magnetic pole on one side are combined. Alternatively, the second magnets 371a and 371b may have a structure having two magnetic poles on one side.

The second Hall element 373 of the other second actuator 370h is disposed closer to the Z direction-side and the X direction-side than the second coil 372b. Such a second Hall element 373 is fixed to an FPC (not shown).

The third magnet 374b of the other second actuator 370h is a magnet different from the second magnet 371a. Specifically, the third magnet 374b is magnetized in the Y direction and has one magnetic pole on one side. Such a third magnet 374 b is arranged on the Z direction − side of the second Hall element 373 and is opposed to the second Hall element 373 in the Z direction. The third magnet 374b is held by a holding portion provided in a lens guide (not shown).

[6.2 Notes]
In the case of this embodiment, magnetic metal shield plates (also called yokes) 6a and 6b are arranged at positions adjacent to the Z direction + side of the second magnets 371a and 371b. Such shield plates 6a and 6b function as yokes of the second magnets 371a and 371b. Other structures, operations and effects are the same as those of the first embodiment.

[7. Embodiment 7]
The camera module according to Embodiment 7 of the present invention will be described with reference to FIGS. In the case of this embodiment, the structure of the pair of AF actuators 364e and 364f is substantially the same as that of the fifth embodiment.

[7.1 About the second actuator]
Of the pair of second actuators 370i and 370j, the second actuator 370i on the Y direction + side includes a pair of second magnets 371a, a second coil 372a, and a second Hall element 373. In the case of the present embodiment, the second magnet 371a is increased by one compared to the structure of the first embodiment. The structures of these members are the same as those in the first embodiment.

Each of the pair of second magnets 371a and a pair of second magnets 371b described later may have a structure in which two magnet elements having one magnetic pole on one side are combined. Alternatively, each of the pair of second magnets 371a and the pair of second magnets 371b may have a structure having two magnetic poles on one side.

Such a pair of second magnets 371a are arranged so as to sandwich the second coil 372a from the Z direction at a predetermined interval. One (that is, the Z direction + side) second magnet 371a is held by one second magnet holding portion 368a of the lens guide 361A. On the other hand, the second magnet 371a on the negative side in the Z direction is held by one third magnet holding portion 368c of the lens guide 361A.

On the other hand, the second actuator 370j on the other side (that is, the Y direction-side) has a pair of second magnets 371b and a second coil 372b. Also in the other second actuator 370j, the second magnet 371b is increased by one as compared with the structure of the first embodiment. The structures of these members are the same as those in the first embodiment.

Such a pair of second magnets 371b are arranged so as to sandwich the second coil 372b from the Z direction at a predetermined interval. One (that is, the Z direction + side) second magnet 371b is held by the other second magnet holding portion (not shown) of the lens guide 361A. On the other hand, the second magnet 371b on the other side (that is, the Z direction minus side) is held by the other third magnet holding portion (not shown) of the lens guide 361.

In the case of this embodiment as described above, since the pair of second magnets 371a and 371b are provided in the pair of second actuators 370i and 370j, respectively, the output of the second shake correction device 37 (see FIG. 5) is increased. it can. Other structures, operations and effects are the same as those of the first embodiment.

[8 Embodiment 8]
A camera module according to Embodiment 8 of the present invention will be described with reference to FIGS. In the case of this embodiment, the structures of the prism module 2c and the lens module 3a are different from those of the first and third embodiments. Hereinafter, the structure of the camera module according to the present embodiment will be described focusing on differences from the first and third embodiments.

[8.1 Prism module]
The prism module 2c of the camera module according to the present embodiment includes a first cover 21 (see FIG. 1A), a first base 22b, a prism 23, and a first shake correction device 24b (see FIGS. 40 and 41). The structures of the first cover 21 and the prism 23 are the same as those in the first embodiment.

[First base]
The first base 22b is a box-shaped member that opens in the Z direction + side and the X direction + side, respectively, as in the first base 22 of the first embodiment. The first base 22b has a base first opening 220 (see FIG. 43) in the bottom wall portion 229b on the Z-direction side.

In the case of the present embodiment, the first coil 244c and the first Hall element 244e of the first actuator 244A are disposed in the base first opening 220.

The first base 22b supports the holder 241B (see FIG. 40) of the first shake correction device 24b so that the holder 241B can swing around a first axis parallel to the Y direction. For this purpose, the first base 22b has a first receiving portion 225c1 and a second receiving portion 225d1 (see FIG. 44) for holding the swing guide member 245, as in the third embodiment.

The 1st receiving part 225c1 is provided in the 1st side wall part 224a1 of the Y direction + side in the 1st base 22b. On the other hand, the second receiving portion 225d1 is provided on the first side wall portion 224b1 on the Y direction minus side of the first base 22b.

The first receiving part 225c1 and the second receiving part 225d1 have a shape symmetrical to each other in the Y direction. Specifically, the first receiving portion 225c1 and the second receiving portion 225d1 are cylindrical recesses that open only on the end surface (upper surface) on the Z direction + side of the first side wall portion 224a1 and the first side wall portion 224b1, respectively. .

The first side wall portion 224a1 includes a first dam portion 224c1 (see FIG. 44) between the Y direction inner end edge of the upper surface and the first receiving portion 225c1. On the other hand, the first side wall portion 224b1 includes a first dam portion 224c2 (see FIG. 44) between the Y direction inner end edge of the upper surface and the second receiving portion 225d1. The first dam portion 224c1 and the first dam portion 224c2 are respectively provided with an adhesive that fixes the swing guide member 245 (see FIG. 43) to the first receiving portion 225c1 and the second receiving portion 225d1 toward the center in the Y direction. Contributes to spill prevention.

The first side wall portion 224a1 has a second dam portion 224d1 (see FIG. 44) at a portion surrounding a part of the outer half of the first receiving portion 225c1 on the upper side in the Y direction. On the other hand, the first side wall portion 224b1 has a second dam portion 224d2 at a portion surrounding a part of the outer half of the second receiving portion 225d1 on the upper surface in the Y direction. The second dam portion 224d1 and the second dam portion 224d2 contribute to preventing the adhesive that fixes the swing guide member 245 to the first receiving portion 225c1 and the second receiving portion 225d1, respectively, from flowing out to the outside in the Y direction.

The first side wall portion 224a1 has spring arrangement spaces 224e1 and 224e2 (see FIG. 44) on the outer side in the Y direction from the second dam portion 224d1 on the upper surface. In the present embodiment, the spring arrangement space 224e1 and the spring arrangement space 224e2 are separated in the X direction.

On the other hand, the first side wall portion 224b1 has spring arrangement spaces 224f1 and 224f2 (see FIG. 44) in the Y direction outer side portion than the second dam portion 224d2 on the upper surface. The spring arrangement space 224f1 and the spring arrangement space 224f2 are separated from each other in the X direction. In the spring arrangement spaces 224e1 and 224e2 and the spring arrangement spaces 224f1 and 224f2, a part of the continuous portion 243i1 (specifically, the base end side continuous portion 243j1) of the swing support spring 243A (see FIG. 45) described later is arranged. Is done.

The first side wall portion 224a1 has three convex portions 224g1, 224g2, and 224g3 in order from the X direction + side on the outer side of the second dam portion 224d1 on the upper surface in the Y direction. The convex part 224g1 and the convex part 224g3 are separated in the X direction and overlap in plan view from the X direction. The convex part 224g2 is located outside the convex part 224g1 and the convex part 224g3 in the Y direction (the lower side in FIG. 44).

The spring arrangement space 224e1 is a space existing between the convex portion 224g1 and the convex portion 224g2. On the other hand, the spring arrangement space 224e2 is a space that exists between the convex portion 224g2 and the convex portion 224g3.

The first side wall portion 224b1 has three convex portions 224h1, 224h2, and 224h3 in order from the X direction + side on the outer side of the second dam portion 224d2 on the upper surface in the Y direction. The convex portion 224h1 and the convex portion 224h3 are separated in the X direction and overlap in plan view from the Y direction. The convex part 224h2 is located on the outer side in the Y direction (upper side in FIG. 44) than the convex part 224h1 and the convex part 224h3.

The spring arrangement space 224f1 is a space that exists between the convex portion 224h1 and the convex portion 224h2. On the other hand, the spring arrangement space 224f2 is a space that exists between the convex portion 224h2 and the convex portion 224h3.

Each of the first side wall portions 224a1 and 224b1 has a first positioning convex portion 226a1 and a second positioning convex portion 227a1 (see FIG. 44) at both ends in the X direction on the upper surface. Each of the first positioning convex portion 226a1 and the second positioning convex portion 227a1 engages with a pair of swing support springs 243A (see FIG. 45) described later to position the pair of swing support springs 243A.

[First shake correction device]
As in the first and third embodiments described above, the first shake correction device 24b swings the prism 23 about the first axis parallel to the Y direction, and rotates around the first axis. Perform shake correction. Such a first shake correction device 24b is disposed in the first accommodation space 223 (see FIG. 6).

The first shake correction device 24b includes a pair of swing guide members 245 (see FIG. 43), a pair of swing support springs 243A, a holder 241B (see FIG. 42), and a first actuator 244A (see FIG. 43).

Also in the case of the present embodiment, in the first shake correction device 24b, the holder 241B is swingably supported by the first base 22b. In this state, the holder 241B swings around the first axis based on the driving force of the first actuator 244A. When the first actuator 244A is driven under the control of a control unit (not shown), the holder 241B and the prism 23 swing around the first axis. Thereby, the shake in the rotational direction around the first axis is corrected. Hereinafter, a specific structure of each member included in the first shake correction device 24b will be described.

[Swing guide member]
Each of the pair of swing guide members 245 is, for example, a sphere made of ceramic, metal, or synthetic resin. One of the pair of swing guide members 245 (that is, the Y direction + side) swing guide member 245 is disposed in the first receiving portion 225c1 (see FIG. 44) of the first base 22b. On the other hand, the other (that is, the Y direction minus side) swing guide member 245 is disposed in the second receiving portion 225d1 of the first base 22b.

The pair of swing guide members 245 are respectively fixed to the first receiving portion 225c1 and the second receiving portion 225d1 with an adhesive. In this state, the Z direction + side half of the pair of swing guide members 245 is a swing guide surface 245a (also referred to as a swing guide portion; see FIG. 23). The swing guide surface 245a protrudes more in the Z direction + side than the first receiving portion 225c1 and the second receiving portion 225d1.

Further, the end on the Z direction + side of each swing guide surface 245a is a portion other than the first positioning convex portion 226a1 and the second positioning convex portion 227a1 on the Z direction + side end surface of the first side wall portions 224a1 and 224b1. It is located on the Z direction + side than (see FIG. 31). The swing guide member 245 is not limited to a sphere, and may be, for example, a hemisphere, a cylinder, or a semi-cylinder. Further, the swing guide member 245 may be integrated with the first base 22b. That is, the swing guide member may be configured by a part of the first base 22b.

[Swing support spring]
The pair of swing support springs 243A support a holder 241B described later so as to be swingable with respect to the first base 22b. Each of the pair of swing support springs 243A is a metal leaf spring, and is disposed on the Z direction + side of the pair of swing guide members 245.

Hereinafter, one (that is, the Y direction + side) swing support spring 243A of the pair of swing support springs 243A will be described with reference to FIG. The other swing support spring 243A (that is, the Y direction minus side) is symmetrical with the other swing support spring 243A in the Y direction.

One swing support spring 243A has a pair of first locking portions 243a1, 243b1, a second locking portion 243c1, a torsion allowing portion 243g1, and a spring side guide surface 243h1.

Among the pair of first locking portions 243a1 and 243b1, one (that is, the X direction + side) first locking portion 243a1 is disposed at an end on the X direction + side of one swing support spring 243A. One such first locking portion 243a1 has a first through hole 243d1.

On the other hand, the first locking portion 243b1 on the other side (that is, the X direction minus side) is disposed at the end on the X direction minus side of the one swing support spring 243A. The other first locking portion 243b1 has a first through hole 243e1. The pair of first locking portions 243a1 and 243b1 are continued by a continuous portion 243i1 extending in the X direction.

The continuous portion 243i1 has a continuous portion element 243j disposed on the X direction + side with respect to a twist allowing portion 243g1 to be described later, and a continuous portion element 243k disposed on the X direction-side with respect to the twist allowing portion 243g1. The continuous portion element 243j continues the twist allowing portion 243g1 and the first locking portion 243a1. On the other hand, the continuous portion element 243k continues the twist allowing portion 243g1 and the first locking portion 243b1.

Hereinafter, the continuous part element 243j will be described. The continuous portion element 243j has a proximal side continuous portion 243j1 and a meandering continuous portion 243j2. The proximal end side continuous portion 243j1 and the meandering continuous portion 243j2 are continuous.

The base end side continuous portion 243j1 is provided at the end portion of the continuous portion element 243j on the side close to the twist allowable portion 243g1. One end of the base end side continuous portion 243j1 (the end portion on the side close to the twist allowable portion 243g1) is continuous with the twist allowable portion 243g1. The meandering continuous portion 243j2 is substantially S-shaped.

One end of the meandering continuous portion 243j2 (the end portion on the side close to the twist allowing portion 243g1) is continuous with the proximal-side continuous portion 243j1. The other end of the meandering continuous portion 243j2 (the end portion far from the twist allowing portion 243g1) is continuous with the first locking portion 243a1. The continuous element 243k is symmetrical to the continuous element 243j in the X direction. For this reason, about the continuous part element 243k, the same code | symbol as the structural member of the continuous part element 243j is attached | subjected, and description is abbreviate | omitted.

The Z-direction-side surfaces of the pair of first locking portions 243a1, 243b1 are bonded and fixed to the Z-direction + -side end surfaces of the first side wall portion 224a1 of the first base 22b. In this state, the first positioning protrusions 226a1 and 227a1 of the first base 22b are inserted into the first through holes 243d1 and 243e1, respectively (see FIG. 43).

In the case of the other (Y direction minus side) swing support spring 243A, the Z direction minus side surfaces of the pair of first locking portions 243a1 and 243b1 are in the Z direction on the first side wall portion 224b1 of the first base 22b. Bonded and fixed to the + side end face.

The second locking portion 243c1 is provided at a portion in the X direction between the first locking portions 243a1 and 243b1 via a gap in the X direction. The second locking portion 243c1 has a pair of second through holes 243f1.

The surface on the Z direction + side of the second locking portion 243c1 is bonded and fixed to a spring seat surface 241s (see FIG. 32) of the holder 241B described later. In this state, the pair of holder-side positioning protrusions 241u (see FIG. 32) of the holder 241B are inserted into the pair of second through holes 243f1, respectively. In the case of the other (Y direction-side) swing support spring 243A, the surface on the Z direction + side of the second locking portion 243c1 is adhesively fixed to the spring seat surface 241t (see FIG. 32) of the holder 241B. .

The torsion allowing portion 243g1 is a plate-like member extending in the Y direction, and is an intermediate portion in the X direction of the continuous portion 243i1 (specifically, one end of each base end side continuous portion 243j1) and the second locking portion. 243c1 is continued. Such a twist allowing portion 243g1 allows the second locking portion 243c1 to be twisted with respect to the first locking portions 243a1 and 243b1 by being twisted.

Further, the torsion allowing portion 243g1 allows relative displacement in the Z direction between the first locking portions 243a1, 243b1 and the second locking portion 243c1 by elastic deformation.

The spring side guide surface 243h1 is configured by the back surface of the second locking portion 243c1 (that is, the surface on the Z direction side). Such a spring-side guide surface 243h1 contacts the swing guide surface 245a (see FIG. 31) of the swing guide member 245.

The pair of swing support springs 243A are plate members that are entirely flat in a free state (also referred to as a non-assembled state). On the other hand, in the assembled state, the pair of swing support springs 243A has the second locking portion 243c1 positioned closer to the Z direction + side than the first locking portions 243a1, 243b1 based on the elastic deformation of the torsion allowing portion 243g1. (See FIG. 31).

Specifically, in the assembled state, the torsion allowing portion 243g1 is elastically deformed so as to be directed toward the Z direction + side toward the second locking portion 243c1. Based on such elastic deformation, the spring-side guide surfaces 243h1 of the pair of swing support springs 243A bias the swing guide member 245 in the Z direction minus side.

In the assembled state of the pair of swing support springs 243A as described above, the base end side continuous portions 243j1 of the pair of swing support springs 243A are disposed in the spring placement spaces 224e1, 224e2 and the spring placement spaces 224f1, 224f2, respectively. Is done. Further, a gel-like damping member 27 is arranged in the spring arrangement spaces 224e1 and 224e2 and the spring arrangement spaces 224f1 and 224f2 so as to cover the proximal end side continuous portion 243j1 (see FIG. 43).

The vibration control member 27 is effective in suppressing unnecessary resonance of the pair of swing support springs 243A. From the viewpoint of suppressing unnecessary resonance, it is preferable that the vibration control member 27 is provided near a portion of the pair of swing support springs 243A that is most deformed during use. In the case of the present embodiment, the portion that deforms the most during use is the twist allowing portion 243g1. For this reason, it is preferable that the vibration control member 27 covers a portion of the pair of swing support springs 243A that is close to the twist allowable portion 243g1.

[holder]
The holder 241B (see FIG. 40) is made of, for example, synthetic resin, and holds the prism 23 in a swingable state with respect to the first base 22b. The basic configuration of the holder 241B is substantially the same as the holder 241A (see FIG. 32) of the third embodiment described above. Hereinafter, the holder 241B will be described with a configuration different from the holder 241A of the third embodiment.

The protruding portions 241q1 and 241r1 of the holder 241B protrude from the pair of opposing wall portions 241f and 241g (see FIG. 32) in the Y direction, and the protruding portions 241q and 241r (see FIG. 32) of the holder 241A of the third embodiment. Smaller than. Therefore, in the assembled state, the positions of both end faces in the Y direction of the holder 241B (that is, the end faces on the outer side in the Y direction of the overhang portions 241q1 and 241r1) are in the Y direction rather than both end faces in the Y direction of the first base 22b. Located on the center side. Such a configuration contributes to reducing the size and weight of the holder 241B.

In the present embodiment, since the spacer 246 (see FIG. 25) of the third embodiment is omitted, the collision prevention convex portions 241m and 241n are formed on the back surface of the holder 241B (that is, the Z direction-side surface). , 241p (see FIG. 32) are not provided. The structure of the other holder 241B is substantially the same as the holder 241 of the first embodiment or the holder 241A of the third embodiment.

[First actuator]
The first actuator 244A swings the holder 241B around the first axis. In the case of the present embodiment, the first axis is a Y axis that passes through a contact portion between the swing guide surface 245a of the pair of swing guide members 245 and the spring side guide surface 243h1 of the pair of swing support springs 243A. Parallel straight lines. The structure of the first actuator 244A is the same as that of the third embodiment described above. Such a first actuator 244A swings the holder 241B around the first axis under the control of a camera shake correction control unit (not shown), as in the third embodiment. The operation when the holder 241B swings around the first axis is the same as that in the third embodiment described above with reference to FIG.

Next, the lens module 3a of the camera module according to this embodiment will be described. The basic configuration of the lens module 3a is substantially the same as the lens module 3 of the first embodiment described above. Hereinafter, the lens module 3a will be described with a focus on differences from the lens module 3 of the first embodiment.

[8.2 Lens module]
46 to 52, the lens module 3a includes a second cover 31 (see FIG. 1A), a second base 32A, a lens unit 33, an AF device 36A, a second shake correction device 37A, and a reference member 38. . The second cover 31, the lens unit 33, and the reference member 38 are the same as those in the first embodiment.

[Second base]
The second base 32A (see FIGS. 46 and 47) is combined with the second cover 31 described above, so that the second accommodation space 320 in which the lens unit 33, the AF device 36A, and the second shake correction device 37A can be disposed. (See FIG. 4).

The basic configuration of the second base 32A is substantially the same as the second base 32 of the first embodiment described above. For this reason, hereinafter, the second base 32A will be described focusing on portions different from the second base 32 of the first embodiment.

The second side wall portion 322a1 of the second base 32A has spring placement portions 324a1 and 324c1 (see FIG. 46) at both ends in the X direction on the side surface on the Y direction + side. A spring 362a1 and a spring 362c1, which will be described later, are arranged in the spring arrangement part 324a1 and the spring arrangement part 324c1, respectively.

The second side wall portion 322a1 of the second base 32A has a slit 322i (see FIG. 46) on the side surface on the Y direction + side. The slit 322i has a space in which a first continuous portion 363i of an FPC 363B (see FIG. 50) described later can be disposed. The space is a space parallel to the ZY plane. The slits 322i open on the Y direction + side and the Z direction both sides.

On the other hand, the second side wall portion 322b1 of the second base 32A has spring arrangement portions 324b1 and 324d1 (see FIG. 47) at both ends in the X direction on the side surface on the Y direction side. A spring 362b1 and a spring 362d1, which will be described later, are arranged in the spring arrangement part 324b1 and the spring arrangement part 324d1, respectively.

The second side wall portion 322b1 of the second base 32A has a pair of concave portions 322j on the side surface on the Y direction side. A pair of second continuous portions 363j of an FPC 363B, which will be described later, is disposed in each of the recesses 322j. In addition, the structure of the recessed part 322j is not limited to the case of illustration.

The spring placement portions 324a1 to 324d1 have gel placement portions 324e to 324h, respectively. In the case of this embodiment, the spring placement portions 324a1 to 324d1 have gel placement portions 324e to 324h at end portions on the Z direction + side, respectively. Each of the gel placement portions 324e to 324h is configured to be able to hold gel-like vibration control members 325a to 325d that cover portions of the springs 362a1 to 362d1.

[Lens part]
The lens unit 33 is disposed in the second accommodation space 320 while being held by a lens guide 361B described later. Such a lens part 33 has a cylindrical lens barrel and one or more lenses held in the lens barrel. As an example, the lens unit 33 includes a telephoto lens group having, for example, an optical triplex or more, which is fixed between the X-direction end of the lens barrel and the X-direction end of the lens barrel. In addition, the structure of the lens part 33 is not limited to the above-mentioned structure.

[AF device]
The AF device 36A (see FIGS. 48 and 49) displaces the lens unit 33 in the X direction for the purpose of autofocus. Specifically, the AF device 36A includes a lens guide 361B, a plurality (four in this embodiment) of springs 362a1 to 362d1, an FPC 363B, and a pair of AF actuators 364a1 and 364b1.

[Lens guide]
The lens guide 361B (see FIGS. 46 to 48) has a housing space capable of holding the lens barrel. Such a lens guide 361B is arranged in the above-described second accommodation space 320 in a state where displacement in the X direction (that is, the direction of the second optical axis) and the Y direction is possible.

The lens guide 361B has a pair of first magnet holding portions 361a1 and 361b1 (see FIGS. 48 and 49) for holding AF magnets 365a1 and 365b1 of a pair of AF actuators 364a1 and 364b1 described later. In the case of this embodiment, the pair of first magnet holding portions 361a1 and 361b1 are respectively disposed in the magnet spaces 322g and 322h (see FIG. 11) of the second base 32A. 48 is a side view of the lens module 3a with some members omitted, as viewed from the Y direction + side. On the other hand, FIG. 49 is a side view of the lens module 3a with some members omitted, as viewed from the Y direction-side.

In the case of the present embodiment, the shape of the pair of first magnet holding portions 361a1 and 361b1 is different from that of the first embodiment described above in a plan view from the Y direction (the state shown in FIGS. 48 and 49). Specifically, each of the pair of first magnet holding portions 361a1 and 361b1 is a recess that is open on the Z direction minus side in a plan view from the Y direction. The pair of first magnet holding portions 361a1 and 361b1 has inclined surface portions 361e1 and 361e2 facing the chamfered portions 365c1 and 365c2 of the AF magnets 365a1 and 365b1, respectively, in a state where the AF magnets 365a1 and 365b1 are held. Have.

Specifically, the pair of first magnet holding portions 361a1 and 361b1 have a pair of side surface portions 361c1 and 361c2 that are separated in the X direction and face each other in the X direction. Each of the pair of first magnet holding portions 361a1 and 361b1 has an upper surface portion 361d in which the end portions on the Z direction + side of the pair of side surface portions 361c1 and 361c2 are continuous in the X direction.

The pair of side surface portions 361c1 and 361c2 have the inclined surface portions 361e1 and 361e2 described above at the end in the Z direction-side. The inclined surface portions 361e1 and 361e2 are inclined surfaces along the chamfered portions 365c1 and 365c2 of the AF magnets 365a1 and 365b1.

Specifically, the inclined surface portion 361e1 and the inclined surface portion 361e2 are inclined in the direction in which the mutual distance in the X direction becomes shorter toward the Z direction-side (lower side in FIGS. 48 and 49). That is, the distance in the X direction between the inclined surface portion 361e1 and the inclined surface portion 361e2 is the smallest at the end on the negative side in the Z direction. Such inclined surface portions 361e1 and 361e2 contribute to preventing the AF magnets 365a1 and 365b1 from coming off in the Z direction − side in the assembled state.

The lens guide 361B has a pair of second magnet holding portions 368a1, 368b1 (see FIGS. 48 and 49) for holding second magnets 371a1, 371b1 of a pair of second actuators 370a1, 370b1, which will be described later. In the case of the present embodiment, the pair of second magnet holding portions 368a1, 368b1 respectively overlap with the coil placement portions 322d, 322e of the second base 32A (see FIGS. 46 and 47) at a predetermined interval in the Z direction. .

In the case of this embodiment, the shape of the pair of second magnet holding portions 368a1 and 368b1 is different from that of the first embodiment described above in a plan view from the Y direction (the state shown in FIGS. 48 and 49). Specifically, each of the pair of second magnet holding portions 368a1 and 368b1 is a recess that is open on the Z direction minus side in a plan view from the Y direction. The pair of second magnet holding portions 368a1 and 368b1 respectively have inclined surface portions 368f1 and 368f2 facing the chamfered portions 371e1 and 371e2 of the second magnets 371a1 and 371b1 in a state where the second magnets 371a1 and 371b1 are held. Have.

Specifically, the pair of second magnet holding portions 368a1 and 368b1 have a pair of side surface portions 368d1 and 368d2 that are separated in the X direction and face each other in the X direction. Each of the pair of second magnet holding portions 368a1, 368b1 has an upper surface portion 368e in which ends on the Z direction + side of the pair of side surface portions 368d1, 368d2 are continuous in the X direction.

Also, the pair of side surface portions 368d1, 368d2 have the above-described inclined surface portions 368f1, 368f2 at the ends in the Z direction-side, respectively. The inclined surface portions 368f1 and 368f2 are inclined surfaces along the chamfered portions 371e1 and 371e2 of the second magnets 371a1 and 371b1.

Specifically, the inclined surface portion 368f1 and the inclined surface portion 368f2 are inclined in a direction in which the mutual distance in the X direction becomes shorter toward the Z direction-side. That is, the distance in the X direction between the inclined surface portion 368f1 and the inclined surface portion 368f2 is the smallest at the end portion on the negative side in the Z direction. Such inclined surface portions 368f1 and 368f2 contribute to preventing the second magnets 371a1 and 371b1 from coming off in the Z direction-side in the assembled state.

[spring]
A plurality of (four in this embodiment) springs 362a1 to 362d1 (see FIGS. 46 and 47) elastically support the lens guide 361B on the second base 32A. In this state, the lens unit 33 can be displaced in the X direction and the Y direction with respect to the second base 32A.

In the present embodiment, the spring 362a1 supports the end of the lens guide 361B on the X direction + side and the Y direction + side on the second base 32A (see FIG. 46). The spring 362b1 supports the end of the lens guide 361B on the X direction + side and the Y direction − side on the second base 32A (see FIG. 47). The spring 362c1 supports the end of the lens guide 361B on the X direction − side and the Y direction + side on the second base 32 (see FIG. 46). Further, the spring 362d1 supports the end of the lens guide 361B on the X direction-side and the Y direction-side on the second base 32A (see FIG. 47).

Each of the springs 362a1 to 362d1 has a first fixing portion 362f1, a second fixing portion 362g1, and an elastic deformation portion 362h1 (see FIG. 51). Note that FIG. 51 shows the springs 362a1 to 362d1 in the assembled state.

The first fixed portion 362f1 is fixed to the lens guide 361B which is a movable side member. The second fixing portion 362g1 is fixed to the second base 32A that is a fixing side member. The elastic deformation portion 362h1 continues the first fixing portion 362f1 and the second fixing portion 362g1. The elastic deformation portion 362h1 is made of, for example, a linear member that is bent at least partially in a meandering shape.

Each of the elastically deforming portions 362h1 of the springs 362a1 to 362d1 has a gel locking portion 362i1 at the intermediate portion. In the assembled state, the gel locking portion 362i1 is covered with the vibration control members 325a, 325b, 325c, and 325d (see FIGS. 46 and 47). Such a gel locking part 362i1 contributes to the improvement of adhesiveness with the vibration control members 325a, 325b, 325c, and 325d by engaging with the vibration control members 325a, 325b, 325c, and 325d.

In the case of the present embodiment, the gel locking portion 362i1 is configured by a curved portion that is curved so as to protrude in the X direction from the straight portion of the elastic deformation portion 362h1. The gel locking portion 362i1 in the springs 362a1 and 362b1 protrudes in the X direction − side from the straight portion of the elastic deformation portion 362h1. On the other hand, the gel locking part 362i1 in the springs 362c1 and 362d1 protrudes from the straight part of the elastic deformation part 362h1 in the X direction + side. That is, the gel locking part 362i1 in the springs 362a1 and 362b1 and the gel locking part 362i1 in the springs 362c1 and 362d1 protrude from the linear part of the elastic deformation part 362h1 in the opposite direction in the X direction.

The shape of the gel locking part 362i1 is not limited to the case of this embodiment. A gel locking part 362i2 shown in FIG. 52B is a modification of the gel locking part 362i1. The gel locking part 362i2 has a continuous part 362j and an annular part 362k.

The continuous portion 362j extends linearly in the X direction from the straight portion of the elastic deformation portion 362h1. The annular portion 362k is annular and continues to the tip of the continuous portion 362j. The continuous part 362j may not be linear. The continuous portion 362j in the springs 362a1 and 362b1 extends from the straight portion of the elastic deformation portion 362h1 to the X direction-side. On the other hand, the continuous part 362j in the springs 362c1 and 362d1 extends from the straight part of the elastic deformation part 362h1 to the X direction + side. For example, the continuous part 362j may have a meandering shape. Further, the shape of the annular portion 362k is not limited to the illustrated case. For example, the shape of the annular portion 362k may be a circle, an ellipse, or a polygon. As shown in FIG. 52C, the gel locking portion 362i2 may be omitted.

In the assembled state, the springs 362a1 to 362d1 are arranged in the spring arrangement portions 324a1 to 324d1 (see FIGS. 46 and 47) of the second base 32A, respectively. In this state, the gel locking portions 362i1 of the springs 362a1 to 362d1 are arranged in the gel arrangement portions 324e to 324h in the spring arrangement portions 324a1 to 324d1, respectively. The gel locking portions 362i1 of the springs 362a1 to 362d1 are covered with gel-like vibration control members 325a to 325d arranged in the gel arrangement portions 324e to 324h, respectively.

In the case of the present embodiment, the elastic deformation portion 362h has directionality in the X direction. The spring 362a1 and the spring 362b1 are arranged in the same direction in the X direction. In other words, the spring 362a1 and the spring 362b1 are arranged so that at least the elastic deformation portion 362h1 overlaps in a plan view from the Y direction.

The spring 362c1 and the spring 362d1 are arranged to be in the same direction in the X direction. In other words, the spring 362c1 and the spring 362d1 are arranged such that at least the elastic deformation portion 362h1 overlaps in a plan view from the Y direction.

The spring 362a1 and the spring 362c1 are arranged so that only the gel locking part 362i2 of the elastically deforming part 362h1 faces in the opposite direction in the X direction. In other words, the spring 362a1 and the spring 362c1 are arranged such that portions other than the gel locking portion 362i2 of the elastic deformation portion 362h1 face the same direction in the X direction.

The spring 362b1 and the spring 362d1 are arranged so that only the gel locking part 362i2 of the elastically deforming part 362h1 faces in the opposite direction in the X direction. That is, the spring 362b1 and the spring 362d1 are arranged such that the portions other than the gel locking portion 362i2 of the elastically deforming portion 362h1 face the same direction in the X direction.

[FPC]
The FPC 363B (see FIG. 50) is a flexible printed circuit board, and is fixed to the second base 32A (see FIGS. 46 and 47). For example, the FPC 363B supplies power to second actuators 370a1 and 370b1 of an AF device 36A and a second shake correction device 37A described later.

Specifically, the FPC 363B is a single continuous flexible printed circuit board, and includes an FPC base portion 363h, a pair of first coil fixing portions 363a and 363b, and a pair of second coil fixing portions 363d and 363e. .

The FPC base portion 363h is a plate-like member extending in the Y direction, and is fixed to the bottom surface portion 321 (see FIGS. 46 and 47) of the second base 32A. An AF coil 366a (see FIG. 48) of the AF device 36A is fixed to the first coil fixing portion 363a via the substrate 7a. In this state, the first coil fixing portion 363a and the AF coil 366a are disposed in the bottom surface through hole 321a (see FIG. 15) of the second base 32A.

Meanwhile, the AF coil 366b (see FIG. 49) of the AF device 36A is fixed to the first coil fixing portion 363b via the substrate 7b. In this state, the first coil fixing portion 363b and the AF coil 366b are disposed in the bottom surface through hole 321b of the second base 32A.

The second coil fixing portions 363d and 363e respectively overlap the first coil fixing portions 363a and 363b with a predetermined interval in the Z direction. Second coils 372a and 372b of a second shake correction device 37A described later are fixed to the surfaces of the second coil fixing portions 363d and 363e, respectively (see FIGS. 48 and 49). In this state, the second coil fixing portions 363d and 363e are placed on the surfaces of the coil placing portion 322d and the coil placing portion 322e (see FIG. 11) of the second base 32A, respectively.

The second coil fixing portion 363d continues to the FPC base portion 363h through the first continuous portion 363i. The first continuous portion 363i is a plate-like member that is parallel to the ZY plane. The first continuous portion 363i is disposed in a slit 322i (see FIG. 46) formed on the side surface on the Y direction + side of the second side wall portion 322a1 in the second base 32A.

On the other hand, the second coil fixing portion 363e continues to the FPC base portion 363h via the second continuous portion 363j. The second continuous portion 363j is a plate-like member that is parallel to the XZ plane. The second continuous portion 363j is disposed in the concave portion 322j (see FIG. 47) of the second side wall portion 322b1 in the second base 32A.

[AF actuator]
The pair of AF actuators 364a1 and 364b1 (see FIGS. 48 and 49) are third actuators for autofocus. The AF actuator 364a1 on the Y direction + side includes an AF magnet 365a1 and an AF coil 366a. On the other hand, the Y-direction-side AF actuator 364b1 includes an AF magnet 365b1, an AF coil 366b, and an AF Hall element 367. Hereinafter, the pair of AF actuators 364a1 and 364b1 will be described with a focus on the structure of the portion different from the first embodiment.

Each of the AF magnets 365a1 and 365b1 has a hexagonal column shape that is long in the X direction and has a substantially hexagonal shape in a plan view from the Y direction (the state shown in FIGS. 48 and 49).

AF magnets 365a1 and 365b1 each have a pair of chamfered portions 365c1 and 365c2. The pair of chamfered portions 365c1 and 365c2 are provided on a pair of side surfaces facing in the X direction in the AF magnets 365a1 and 365b1, respectively. The chamfered portion 365c1 and the chamfered portion 365c2 overlap in plan view from the X direction. Further, the chamfered portion 365c1 and the chamfered portion 365c2 are inclined in a direction in which the distance between the chamfered portion 365c1 and the chamfered portion 365c2 approaches each other in the X direction toward the Z direction minus side in plan view from the Y direction.

Such chamfered portion 365c1 and chamfered portion 365c2 respectively face the inclined surface portions 361e1 and 361e2 of the pair of first magnet holding portions 361a1 and 361b1 in the lens guide 361B in the assembled state. Other structures of the pair of AF actuators 364a1 and 364b1 are the same as those of the pair of AF actuators 364a and 364b of the first embodiment.

[Second shake correction device]
The second shake correction device 37A (see FIGS. 48 and 49) performs shake correction in the Y direction by displacing the lens unit 33 in the Y direction. Such a second shake correction device 37A is disposed in the second accommodation space 320 (see FIG. 4).

The second shake correction device 37A includes the lens guide 361B described above, the plurality of springs 362a1 to 362d1 described above, the FPC 363B described above, and a pair of second actuators 370a1 and 370b1. The lens guide 361B, the springs 362a1 to 362d1, and the FPC 363B are common to the AF device 36A.

The second actuator 370a1 (see FIG. 48) on the Y direction + side is arranged in a state where it overlaps the above-described AF actuator 364a1 with a predetermined interval in the Z direction. Such a second actuator 370a1 has a second magnet 371a1 and a second coil 372a. The second coil 372a is the same as that in the first embodiment.

On the other hand, the second actuator 370b1 (see FIG. 49) on the Y-direction side is arranged in a state of being overlapped with the above-described AF actuator 364b1 at a predetermined interval in the Z-direction. Such a second actuator 370a1 includes a second magnet 371b1, a second coil 372b, and a second Hall element 373. The second coil 372b and the second Hall element 373 are the same as those in the first embodiment. Hereinafter, the pair of second actuators 370a1 and 370b1 will be described focusing on the structure of the portion different from the first embodiment.

The second magnets 371a1 and 371b1 of the pair of second actuators 370a1 and 370b1 are respectively held by the second magnet holding portions 368a1 and 368b1 of the lens guide 361B.

The second magnets 371a1 and 371b1 each have a hexagonal column shape that is long in the X direction and has a substantially hexagonal shape in a plan view from the Y direction (the state shown in FIGS. 48 and 49).

The second magnets 371a1 and 371b1 have a pair of chamfered portions 371e1 and 371e2, respectively. The pair of chamfered portions 371e1 and 371e2 are provided on the pair of side surfaces facing the X direction in the second magnets 371a1 and 371b1, respectively. The chamfered portion 371e1 and the chamfered portion 371e2 overlap in plan view from the X direction. Further, the chamfered portion 371e1 and the chamfered portion 371e2 are inclined in a direction in which the mutual distance in the X direction becomes closer toward the Z direction minus side in a plan view from the Y direction.

Such chamfered portion 371e1 and chamfered portion 371e2 respectively face the inclined surface portions 368f1, 368f2 of the pair of second magnet holding portions 368a1, 368b1 in the lens guide 361B in the assembled state. The other parts of the structure of the pair of second actuators 370a1 and 370b1 are the same as those of the pair of second actuators 370a and 370b in the first embodiment. Further, in the camera module according to the present embodiment, the configuration, operation, and effects other than those described above are the same as those in the first embodiment.

Japanese Patent Application No. 2017-103954 filed on May 25, 2017, Japanese Patent Application No. 2017-119447 filed on June 19, 2017, and Japanese Patent Application No. 2017-209582 filed on October 30, 2017 The disclosures of the drawings and abstract are all incorporated herein by reference.

The camera actuator and camera module according to the present invention can be mounted on a thin camera mounting device such as a smartphone, a mobile phone, a digital camera, a notebook computer, a tablet terminal, a portable game machine, or an in-vehicle camera.

1, 1a Camera module 2, 2a, 2b, 2c Prism module 21 First cover 22, 22a, 22b First base 220 Base first opening 223 First accommodating space 224a, 224b, 224a1, 224b1 First side wall 224c1, 224c2 First dam portion 224d1, 224d2 Second dam portion 224e1, 224e2, 224f1, 224f2 Spring arrangement space 224g1, 224g2, 224g3 Convex portion 224h1, 224h2, 224h3 Convex portion 225a First bearing portion 225b Second bearing portion 225c, 225c1 First One receiving part 225d, 225d1 Second receiving part 225e, 225f Stopper surface 226, 226a, 226a1 First positioning convex part 227, 227a, 227a1 Second positioning convex part 228 Third positioning convex part 229, 229b Wall portion 229a Bottom groove 23 Prism 231 Optical path bending surface 24, 24a, 24b First shake correction device 241, 241A, 241B Holder 241a Placement surface 241c, 241d Oscillation support portion 241f, 241g Opposing wall portion 241i, 241k Pressed portion 241m, 241n, 241p Collision prevention convex part 241q, 241r, 241q1, 241r1 Overhang part 241s, 241t Spring seat surface 241u Holder side positioning convex part 242 Holding spring 242a Fixed base part 242c Press part 242e Spring side first hole 242g Spring side second hole 242g Hole 242i Spring side third hole 243, 243A Swing support springs 243a, 243b, 243a1, 243b1 First locking portion 243c, 243c1 Second locking portion 243d, 243e, 243d1, 243e1 First through hole 243f, 243f Second through-hole 243g, 243g1 Twisting allowable portion 243h, 243h1 Spring-side guide surface 243i, 243i1 continuous portion 243j, 243k continuous portion element 243j1 base end-side continuous portion 243j2 meandering continuous portion 244, 244A first actuator 244a first magnet 244c first One coil 244e First Hall element 244f First magnet 245 Swing guide member 245a Swing guide surface 246 Spacer 246a Spacer side through hole 25 FPC
26 Yoke 27 Damping member 3, 3a Lens module 31 Second cover 32, 32A Second base 320 Second receiving space 321 Bottom surface portion 321a, 321b Bottom through hole 322a, 322b, 322a1, 322b1 Second side wall portion 322d, 322e Coil Placement part 322g, 322h Magnet space 322i Slit 322j Recess 323 Reinforcement plate 324a, 324b, 324c, 324d, 324a1, 324b1, 324c1, 324d1 Spring arrangement part 324e, 324f, 324g, 324h Gel arrangement part 325a, 325b, 325c, 325d Damping member 33 Lens part 36, 36A AF device 361, 361A, 361B Lens guide 361a, 361b, 361a1, 361b1 First magnet holding part 361c , 361c2 Side surface part 361d Upper surface part 361e1, 361e2 Inclined surface part 362a, 362b, 362c, 362d, 362a1, 362b1, 362c1, 362d1 Spring 362f, 362f1 First fixing part 362g, 362g1 Second fixing part 362h 362h 362i2 Gel locking part 362j Continuous part 362k Annular part 363, 363A, 363B FPC
363a, 363b First coil fixing part 363d, 363e, 363f, 363g Second coil fixing part 363h FPC base 363i First continuous part 363j Second continuous part 364a, 364b, 364c, 364d, 364e, 364f, 364a1, 364b1 AF actuator (Third actuator)
365a, 365b, 365a1, 365b1 AF magnet 365c1, 365c2 Chamfered portion 366a, 366b AF coil 367, 367a AF hall element 368a, 368b, 368a1, 368b1 Second magnet holding portion 368d1, 371d2 Side surface portion 368f Upper surface portion 368f 368f2 Inclined surface portion 368c Third magnet holding portion 369a, 369b Second magnet for AF 37, 37A Second shake correction device 370a, 370b, 370c, 370d, 370e, 370f, 370g, 370h, 370i, 370j, 370a1, 370b1 Two actuators 371a, 371b, 371c, 371d, 371a1, 371b1 Second magnet 371e1, 371e2 Chamfer 372a, 372b Second carp 373 Second Hall element 374a, 374b Third magnet 38 Reference member 38a Through hole 380a, 380b Stopper portion 391a, 391b, 391c, 391d First reinforcing plate 392a, 392b, 392c, 392d Second reinforcing plate 4 Imaging element module 6a, 6b Shield plate 7a, 7b Board

Claims (18)

1. An optical path bending member;
   A lens portion disposed at a subsequent stage of the optical path bending member;
   A first actuator disposed near the optical path bending member and displacing the optical path bending member;
   A second actuator disposed in the vicinity of the lens portion and spaced apart from each other in the first direction, and displacing the lens portion in each of a second direction and a third direction orthogonal to the first direction and orthogonal to each other; Three actuators,
   A camera actuator comprising:
2. The optical path bending member has an optical path bending surface,
   The first actuator is disposed on the back side of the optical path bending surface with respect to the optical path bending member.
   The actuator for cameras according to claim 1.
3. The optical path bending member bends incident light along the direction of the first optical axis in the direction of the second optical axis,
   The optical path bending member and the first actuator are arranged apart from each other in the direction of the first optical axis.
   The actuator for cameras according to claim 1.
4. The optical path bending member bends incident light along the direction of the first optical axis in the direction of the second optical axis,
   The first direction coincides with the direction of the first optical axis.
   The actuator for cameras according to claim 1.
5. The direction of the first optical axis extends from the top to the bottom of the camera actuator,
   The first actuator is disposed at the bottom of the camera actuator.
   The camera actuator according to claim 3 or 4.
6. 5. The camera according to claim 3, wherein the first actuator swings the optical path bending member about a swing center axis orthogonal to the direction of the first optical axis and the direction of the second optical axis. Actuator.
7. The camera actuator according to claim 3 or 4, wherein the second actuator displaces the lens unit in a direction orthogonal to the direction of the first optical axis and the direction of the second optical axis.
8. The first actuator and the second actuator constitute a shake correction actuator,
   The third actuator constitutes an autofocus actuator.
   The actuator for cameras according to claim 1.
9. A holder for holding the optical path bending member;
   A first base having a bearing portion that supports the holder in a swingable manner;
   The camera actuator according to claim 1, further comprising a biasing mechanism that biases the holder toward the first base.
10. The camera actuator according to claim 9, wherein the biasing mechanism biases the holder from both sides in the width direction of the holder toward a center portion in the width direction.
11. The said urging mechanism is a spring member which urges | biases the said holder with respect to said 1st base, and urges | biases from the both sides in the width direction of the said holder toward the center part of the width direction. Camera actuators.
12. The urging mechanism includes a first magnet fixed to the holder, and a yoke fixed to the first base,
    The camera actuator according to claim 9, wherein the biasing mechanism biases the holder against the first base based on a magnetic force generated between the first magnet and the yoke.
13. A lens guide for holding the lens unit;
    A second base capable of accommodating the lens guide;
    The camera actuator according to claim 1, further comprising: a plurality of springs that support the lens guide on the second base so as to allow displacement in the second direction and the third direction.
14. The plurality of springs are dispersedly arranged around the lens guide, and the center position of the dispersed arrangement of the plurality of springs is the center of gravity of the movable part configured by the lens guide and a member that can be displaced together with the lens guide. The camera actuator according to claim 13, wherein the camera actuator matches the position.
15. A holder for holding the optical path bending member;
    A first base for swingably supporting the holder;
    A swing guide member provided between the holder and the first base and having a spherical swing guide surface at least in part;
    The holder is swingably supported on the first base via the swing guide member.
    The actuator for cameras according to claim 1.
16. A lens guide for holding the lens unit;
    At least one of the second actuator and the third actuator has a magnet having a pair of chamfered portions formed on a pair of side surfaces opposed to each other in a predetermined direction,
    The lens guide is
    A magnet holding portion having a pair of inclined surface portions, the magnet holding portion holding the magnet in a state where the pair of chamfered portions and the pair of inclined surface portions are opposed to each other;
    The actuator for cameras according to claim 1.
17. An actuator for a camera according to claim 1;
    An image sensor disposed at the rear stage of the lens unit;
    A camera module comprising:
18. A camera module according to claim 17,
    A control unit for controlling the camera module;
    A camera-equipped device.

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